Basketball is a team sport in which two teams, most of five players each, opposing one another on a rectangular court, compete with the primary objective of shooting a basketball through the defender's hoop while preventing the opposing team from shooting through their own hoop. A field goal is worth two points, unless made from behind the three-point line, when it is worth three. After a foul, timed play stops and the player fouled or designated to shoot a technical foul is given one or more one-point free throws; the team with the most points at the end of the game wins, but if regulation play expires with the score tied, an additional period of play is mandated. Players advance the ball by bouncing it while walking or running or by passing it to a teammate, both of which require considerable skill. On offense, players may use a variety of shots -- a dunk, it is a violation to lift or drag one's pivot foot without dribbling the ball, to carry it, or to hold the ball with both hands resume dribbling.
The five players on each side at a time fall into five playing positions: the tallest player is the center, the tallest and strongest is the power forward, a shorter but more agile big man is the small forward, the shortest players or the best ball handlers are the shooting guard and the point guard, who implements the coach's game plan by managing the execution of offensive and defensive plays. Informally, players may play three-on-three, two-on-two, one-on-one. Invented in 1891 by Canadian-American gym teacher James Naismith in Springfield, United States, basketball has evolved to become one of the world's most popular and viewed sports; the National Basketball Association is the most significant professional basketball league in the world in terms of popularity, salaries and level of competition. Outside North America, the top clubs from national leagues qualify to continental championships such as the Euroleague and FIBA Americas League; the FIBA Basketball World Cup and Men's Olympic Basketball Tournament are the major international events of the sport and attract top national teams from around the world.
Each continent hosts regional competitions for national teams, like FIBA AmeriCup. The FIBA Women's Basketball World Cup and Women's Olympic Basketball Tournament feature top national teams from continental championships; the main North American league is the WNBA, whereas strongest European clubs participate in the EuroLeague Women. In early December 1891, Canadian James Naismith, a physical education professor and instructor at the International Young Men's Christian Association Training School in Springfield, was trying to keep his gym class active on a rainy day, he sought a vigorous indoor game to keep his students occupied and at proper levels of fitness during the long New England winters. After rejecting other ideas as either too rough or poorly suited to walled-in gymnasiums, he wrote the basic rules and nailed a peach basket onto a 10-foot elevated track. In contrast with modern basketball nets, this peach basket retained its bottom, balls had to be retrieved manually after each "basket" or point scored.
Basketball was played with a soccer ball. These round balls from "association football" were made, at the time, with a set of laces to close off the hole needed for inserting the inflatable bladder after the other sewn-together segments of the ball's cover had been flipped outside-in; these laces could dribbling to be unpredictable. A lace-free ball construction method was invented, this change to the game was endorsed by Naismith; the first balls made for basketball were brown, it was only in the late 1950s that Tony Hinkle, searching for a ball that would be more visible to players and spectators alike, introduced the orange ball, now in common use. Dribbling was not part of the original game except for the "bounce pass" to teammates. Passing the ball was the primary means of ball movement. Dribbling was introduced but limited by the asymmetric shape of early balls. Dribbling was common by 1896, with a rule against the double dribble by 1898; the peach baskets were used until 1906 when they were replaced by metal hoops with backboards.
A further change was soon made, so the ball passed through. Whenever a person got the ball in the basket, his team would gain a point. Whichever team got; the baskets were nailed to the mezzanine balcony of the playing court, but this proved impractical when spectators in the balcony began to interfere with shots. The backboard was introduced to prevent this interference. Naismith's handwritten diaries, discovered by his granddaughter in early 2006, indicate that he was nervous about the new game he had invented, which incorporated rules from a children's game called duck on a rock, as many had failed before it. Frank Mahan, one of the players from the original
National Basketball Association
The National Basketball Association is a men's professional basketball league in North America. It is considered to be the premier men's professional basketball league in the world; the NBA is an active member of USA Basketball, recognized by FIBA as the national governing body for basketball in the United States. The NBA is one of the four major professional sports leagues in the United States and Canada. NBA players are the world's best paid athletes by average annual salary per player; the league was founded in New York City on June 1946, as the Basketball Association of America. The league adopted the name National Basketball Association on August 3, 1949, after merging with the competing National Basketball League; the league's several international as well as individual team offices are directed out of its head offices located in the Olympic Tower at 645 Fifth Avenue in Midtown Manhattan. NBA Entertainment and NBA TV studios are directed out of offices located in New Jersey; the Basketball Association of America was founded in 1946 by owners of the major ice hockey arenas in the Northeastern and Midwestern United States and Canada.
On November 1, 1946, in Toronto, Canada, the Toronto Huskies hosted the New York Knickerbockers at Maple Leaf Gardens, in a game the NBA now refers to as the first game played in NBA history. The first basket was made by Ossie Schectman of the Knickerbockers. Although there had been earlier attempts at professional basketball leagues, including the American Basketball League and the NBL, the BAA was the first league to attempt to play in large arenas in major cities. During its early years, the quality of play in the BAA was not better than in competing leagues or among leading independent clubs such as the Harlem Globetrotters. For instance, the 1948 ABL finalist Baltimore Bullets moved to the BAA and won that league's 1948 title, the 1948 NBL champion Minneapolis Lakers won the 1949 BAA title. Prior to the 1948–49 season, however, NBL teams from Fort Wayne, Indianapolis and Rochester jumped to the BAA, which established the BAA as the league of choice for collegians looking to turn professional.
On August 3, 1949, the remaining NBL teams–Syracuse, Tri-Cities, Sheboygan and Waterloo–merged into the BAA. In deference to the merger and to avoid possible legal complications, the league name was changed to the present National Basketball Association though the merged league retained the BAA's governing body, including Podoloff. To this day, the NBA claims the BAA's history as its own, it now reckons the arrival of the NBL teams as an expansion, not a merger, does not recognize NBL records and statistics. The new league had seventeen franchises located in a mix of large and small cities, as well as large arenas and smaller gymnasiums and armories. In 1950, the NBA consolidated to eleven franchises, a process that continued until 1953–54, when the league reached its smallest size of eight franchises: the New York Knicks, Boston Celtics, Philadelphia Warriors, Minneapolis Lakers, Rochester Royals, Fort Wayne Pistons, Tri-Cities Blackhawks, Syracuse Nationals, all of which remain in the league today.
The process of contraction saw. The Hawks shifted from the Tri-Cities to Milwaukee in 1951, to St. Louis in 1955; the Rochester Royals moved from Rochester, New York, to Cincinnati in 1957 and the Pistons relocated from Fort Wayne, Indiana, to Detroit in 1957. Japanese-American Wataru Misaka broke the NBA color barrier in the 1947–48 season when he played for the New York Knicks, he remained the only non-white player in league history prior to the first African-American, Harold Hunter, signing with the Washington Capitols in 1950. Hunter was cut from the team during training camp, but several African-American players did play in the league that year, including Chuck Cooper with the Celtics, Nathaniel "Sweetwater" Clifton with the Knicks, Earl Lloyd with the Washington Capitols. During this period, the Minneapolis Lakers, led by center George Mikan, won five NBA Championships and established themselves as the league's first dynasty. To encourage shooting and discourage stalling, the league introduced the 24-second shot clock in 1954.
If a team does not attempt to score a field goal within 24 seconds of obtaining the ball, play is stopped and the ball given to its opponent. In 1957, rookie center Bill Russell joined the Boston Celtics, which featured guard Bob Cousy and coach Red Auerbach, went on to lead the club to eleven NBA titles in thirteen seasons. Center Wilt Chamberlain entered the league with the Warriors in 1959 and became a dominant individual star of the 1960s, setting new single game records in scoring and rebounding. Russell's rivalry with Chamberlain became one of the greatest rivalries in the history of American team sports; the 1960s were dominated by the Celtics. Led by Russell, Bob Cousy and coach Red Auerbach, Boston won eight straight championships in the NBA from 1959 to 1966; this championship streak is the longest in NBA history. They did not win the title in 1966–67, but regained it in the 1967–68 season and repeated in 1969; the domination totaled nine of the ten championship banners of the 1960s.
Through this period, the NBA continued to evolve with the shift of the Minneapolis Lakers to Los Angeles, the Philadelphia Warriors to San Francisco, the Syracuse Nationals to Philadelphia to become the Philadelphia 76ers, the St. Louis Hawks moving to Atlanta, as well as the addition of its first expansion franchises; the Chicago Packers (now Wa
Morgantown, West Virginia
Morgantown is a city in and the county seat of Monongalia County, West Virginia, United States, situated along the banks of the Monongahela River. It is known as the home of West Virginia University and the Morgantown Personal Rapid Transit system. With a permanent population of 31,073 per the 2015 U. S. Census estimates, Morgantown is the largest city in North-Central West Virginia; the Morgantown metropolitan area has a population of 138,176. Morgantown is tied to the Anglo-French struggle for this territory; until the Treaty of Paris in 1763, what is now known as Morgantown was contested by white settlers and Native Americans, by British and French soldiers. The treaty decided the issue in favor of the British, but Indian fighting continued to the beginning of the American Revolutionary War in 1775. Zackquill Morgan, son of Morgan Morgan, his brother David entered the area of Virginia that would become Morgantown around 1767, although others such as Thomas Decker are recorded as attempting settlements in the area a decade earlier.
As well, several forts were built in the area during this time: Fort Pierpont near the Cheat River, in 1769. Fort Morgan, at the present site of Morgantown, in 1772. Zackquill Morgan settled the area about 1772 by establishing a homestead near present-day Fayette Street and University Avenue. Morgan fought in both the French and Indian War and the American Revolutionary War, rising to the rank of colonel. By 1783, following his wartime duties, Colonel Morgan commissioned Major William Haymond to survey his land and divide it into streets and lots. Colonel Morgan received a legal certificate for 400 acres in the area of his settlement near the mouth of Decker's Creek. 50 acres were appropriated for Morgan's Town by the Virginia General Assembly in October 1785. On February 3, 1838, the Virginia General Assembly enacted a municipal charter incorporating the city, now with a population of about 700, as Morgantown, Virginia; the town became part of the newly created state of West Virginia on June 20, 1863, through the Reorganized Government of Virginia.
Notable early structures still standing in Morgantown as of 2018 include the Old Stone House, built in 1795 by Jacob Nuce on Long Alley and the John Rogers family home on Foundry Street, built in 1840 and occupied as of 2011 by the Dering Funeral Home. During the 1970s, the U. S. Department of Transportation built an experimental driverless personal rapid transit system in the city, citing the area's variable seasonal climate and geographic elevations as factors in testing the technology's viability; the Morgantown Personal Rapid Transit has been in use since 1975. University students use the system for free to travel between the spread-out campuses. Morgantown is located 75 miles south of Pittsburgh, Pennsylvania, 208 mi north-northwest of Washington, D. C. 81 mi east of Marietta, 156 mi northeast of Charleston, West Virginia. Morgantown is just south of the Mason–Dixon line. According to the United States Census Bureau, the city has a total area of 10.62 square miles, of which, 10.17 square miles is land and 0.45 square miles is water.
Morgantown lies in the transition between a humid subtropical and humid continental climate, with four distinct seasons. Winters are cool to cold with a January daily mean temperature of 31.3 °F, an average seasonal snowfall of 21.0 inches and 1.7 nights of sub-0 °F readings. Summers are hot and humid with a July daily mean temperature of 73.2 °F and 12 days of 90 °F + highs annually. Precipitation is generous, with winter being May through July the wettest. Extreme temperatures range from −25 °F on February 10, 1899, up to 105 °F on August 26, 1893. Morgantown is made up of several neighborhoods, some of, independent towns that were annexed by the city as it continued to grow. Neighborhoods include First Ward, South Park, Jerome Park, South Hills, Second Ward, Suncrest, Wiles Hill, Sabraton, the Mileground, North Hills. While some of these, such as the Mileground and Sabraton, are in part or outside the city limits, they are still considered part of Morgantown; the City of Morgantown contained an estimated 31,073 residents in 2014.
The Morgantown MSA contains 117,000 permanent residents, including over 30,000 full-time students at West Virginia University. Fort Burris was erected in 1774 in; the fort was a settler's blockhouse located in what is, as of 2019, the Summers Masonic Lodge at the intersection of Burroughs and Windsor streets. During 1885–1888, the land in the Evansdale/Suncrest area was agricultural, with farms of 400–1,000 acres. Drummond's Chapel was named after a minister who moved to Missouri; the Evans Farm was located on land near Riverview Drive and 8th Street and was named for Colonel John Evans, who fought in the American Revolution with Morgantown founder Zack Morgan. The Krepps farmhouse was located on land where the West Virginia University Creative Arts Center and Agricultural buildings would be built. Dilley Farm was located on the other side of 8th street; the Van Voorhis Farm was large. Down Collins Ferry Road was the Anderson Farm; the Jacobs Farm was
Purdue University is a public research university in West Lafayette and the flagship campus of the Purdue University system. The university was founded in 1869 after Lafayette businessman John Purdue donated land and money to establish a college of science and agriculture in his name; the first classes were held on September 1874, with six instructors and 39 students. The main campus in West Lafayette offers more than 200 majors for undergraduates, over 69 masters and doctoral programs, professional degrees in pharmacy and veterinary medicine. In addition, Purdue has more than 900 student organizations. Purdue is a member of the Big Ten Conference and enrolls the second largest student body of any university in Indiana, as well as the fourth largest foreign student population of any university in the United States. In 1865, the Indiana General Assembly voted to take advantage of the Morrill Land-Grant Colleges Act of 1862, began plans to establish an institution with a focus on agriculture and engineering.
Communities throughout the state offered their facilities and money to bid for the location of the new college. Popular proposals included the addition of an agriculture department at Indiana State University or at what is now Butler University. By 1869, Tippecanoe County’s offer included $150,000 from Lafayette business leader and philanthropist John Purdue, $50,000 from the county, 100 acres of land from local residents. On May 6, 1869, the General Assembly established the institution in Tippecanoe County as Purdue University, in the name of the principal benefactor. Classes began at Purdue on September 1874, with six instructors and 39 students. Professor John S. Hougham was Purdue’s first faculty member and served as acting president between the administrations of presidents Shortridge and White. A campus of five buildings was completed by the end of 1874. Purdue issued its first degree, a Bachelor of Science in chemistry, in 1875 and admitted its first female students that fall. Emerson E. White, the university’s president from 1876 to 1883, followed a strict interpretation of the Morrill Act.
Rather than emulate the classical universities, White believed Purdue should be an "industrial college" and devote its resources toward providing a liberal education with an emphasis on science and agriculture. He intended not only to prepare students for industrial work, but to prepare them to be good citizens and family members. Part of White's plan to distinguish Purdue from classical universities included a controversial attempt to ban fraternities; this ban was overturned by the Indiana Supreme Court and led to White's resignation. The next president, James H. Smart, is remembered for his call in 1894 to rebuild the original Heavilon Hall "one brick higher" after it had been destroyed by a fire. By the end of the nineteenth century, the university was organized into schools of agriculture and pharmacy, former U. S. President Benjamin Harrison was serving on the board of trustees. Purdue's engineering laboratories included testing facilities for a locomotive and a Corliss steam engine, one of the most efficient engines of the time.
The School of Agriculture was sharing its research with farmers throughout the state with its cooperative extension services and would undergo a period of growth over the following two decades. Programs in education and home economics were soon established, as well as a short-lived school of medicine. By 1925 Purdue had the largest undergraduate engineering enrollment in the country, a status it would keep for half a century. President Edward C. Elliott oversaw a campus building program between the world wars. Inventor and trustee David E. Ross coordinated several fundraisers, donated lands to the university, was instrumental in establishing the Purdue Research Foundation. Ross's gifts and fundraisers supported such projects as Ross–Ade Stadium, the Memorial Union, a civil engineering surveying camp, Purdue University Airport. Purdue Airport was the country's first university-owned airport and the site of the country's first college-credit flight training courses. Amelia Earhart joined the Purdue faculty in 1935 as a consultant for these flight courses and as a counselor on women's careers.
In 1937, the Purdue Research Foundation provided the funds for the Lockheed Electra 10-E Earhart flew on her attempted round-the-world flight. Every school and department at the university was involved in some type of military research or training during World War II. During a project on radar receivers, Purdue physicists discovered properties of germanium that led to the making of the first transistor; the Army and the Navy conducted training programs at Purdue and more than 17,500 students and alumni served in the armed forces. Purdue set up about a hundred centers throughout Indiana to train skilled workers for defense industries; as veterans returned to the university under the G. I. Bill, first-year classes were taught at some of these sites to alleviate the demand for campus space. Four of these sites are now degree-granting regional campuses of the Purdue University system. Purdue's on-campus housing became racially desegregated in 1947, following pressure from Purdue President Frederick L. Hovde and Indiana Governor Ralph F. Gates.
After the war, Hovde worked to expand the academic opportunities at the university. A decade-long construction program emphasized research. In the late 1950s and early 1960s the university established programs in veterinary medicine, industrial management, nursing, as well as the first computer science department in the United States. Undergraduate humanities courses were strengthened
The Detroit Pistons are an American professional basketball team based in Detroit, Michigan. The Pistons compete in the National Basketball Association as a member of the league's Eastern Conference Central Division and plays its home games at Little Caesars Arena; the team was founded in Fort Wayne, Indiana as the Fort Wayne Pistons in 1941, a member of the National Basketball League where it won two NBL championships: in 1944 and 1945. The Pistons joined the Basketball Association of America in 1948; the NBL and BAA merged to become the NBA in 1949, the Pistons became part of the merged league. Since moving to Detroit in 1957, the Pistons have won three NBA championships: in 1989, 1990 and 2004; the Detroit Pistons franchise was founded as the Fort Wayne Zollner Pistons, a National Basketball League team, in Fort Wayne, Indiana. Owner Fred Zollner's Zollner Corporation was a foundry that manufactured pistons for car and locomotive engines; the Zollner Pistons were NBL champions in 1944 and 1945.
They won the World Professional Basketball Tournament in 1944, 1945 and 1946. In 1948, the team became the Fort Wayne Pistons. In 1949, Fred Zollner brokered the formation of the National Basketball Association from the BAA and the NBL at his kitchen table. There are suggestions that Pistons players conspired with gamblers to shave points and throw various games during the 1953–54 and 1954–55 seasons. In particular, there are accusations that the team may have intentionally lost the 1955 NBA Finals to the Syracuse Nationals. In the decisive Game 7, the Pistons led 41–24 early in the second quarter before the Nationals rallied to win the game; the Nationals won on a free throw by George King with twelve seconds left in the game. The closing moments included a palming turnover by the Pistons' George Yardley with 18 seconds left, a foul by Frank Brian with 12 seconds left that enabled King's winning free throw, a turnover by the Pistons' Andy Phillip in the final seconds which cost them a chance to attempt the game winning shot.
Though the Pistons enjoyed a solid local following, Fort Wayne's small size made it difficult for them to be profitable as other early NBA teams based in smaller cities started folding or relocating to larger markets. After the 1956–57 season, Zollner decided that Fort Wayne was too small to support an NBA team and announced the team would be playing elsewhere in the coming season, he settled on Detroit. Although it was the fifth largest city in the United States at the time, Detroit had not seen professional basketball in a decade, they lost the Detroit Eagles due to World War II, both the Detroit Gems of the NBL and the Detroit Falcons of the BAA in 1947, the Detroit Vagabond Kings in 1949. Zollner decided to keep the Pistons name, believing it made sense given Detroit's status as the center of the automobile industry; the Pistons played in Olympia Stadium for their first four seasons moved to Cobo Arena. During the 1960s and 1970s, the Pistons were characterized by strong individuals and weak teams.
Some of the superstars who played for the team included Dave DeBusschere, Dave Bing, Bob Lanier. At one point, DeBusschere was the youngest player-coach in the history of the NBA. A trade during the 1968–69 season sent DeBusschere to the New York Knicks for Howard Komives and Walt Bellamy, both of whom were in the stages of their careers. DeBusschere became a key player in leading the Knicks to two NBA titles. In 1974, Zollner sold the team to glass magnate Bill Davidson, who remained the team's principal owner until his death in 2009. While the Pistons did qualify for the postseason in four straight seasons from 1974 to 1977, they never had any real sustained success. In 1978, Davidson became displeased with Cobo Arena, but opted not to follow the Red Wings to the under-construction Joe Louis Arena. Instead, he moved the team to the suburb of Pontiac, where they played in the 82,000 capacity Silverdome, a structure built for professional football; the Pistons stumbled their way out of the 1970s and into the 1980s, beginning with a 16–66 record in 1979–80 and following up with a 21–61 record in 1980–81.
The 1979–80 team lost its last 14 games of the season which, when coupled with the seven losses at the start of the 1980–81 season, comprised a then-NBA record losing streak of 21 games. The franchise's fortunes began to turn in 1981, when they drafted point guard Isiah Thomas from Indiana University. In November 1981, the Pistons acquired Vinnie Johnson in a trade with the Seattle SuperSonics, they would acquire center Bill Laimbeer in a trade with the Cleveland Cavaliers in February 1982. Another key move by the Pistons was the hiring of head coach Chuck Daly in 1983; the Pistons had a tough time moving up the NBA ladder. In 1984, the Pistons lost a tough five-game series to the underdog New York Knicks, 3–2. In the 1985 playoffs, Detroit won its first-round series and faced the defending champion Boston Celtics in the conference semifinals. Though Boston would prevail in six games, Detroit's surprise performance promised that a rivalry had begun. In the 1985 NBA draft, the team selected Joe Dumars 18th overall, a selection that would prove to be wise.
They acquired Rick Mahorn in a trade with the Washington Bullets. However, the team took a step backwards, losing in the first round of the 1986 playoffs to the more athletic Atlanta Hawks. After the series, changes were made in order to make the team more defensive-minded. Prior to the 1986–87 season, the Pistons acquired more key players: John Salley (
Field goal (basketball)
In basketball, a field goal is a basket scored on any shot or tap other than a free throw, worth two or three points depending on the distance of the attempt from the basket. Uncommonly, a field goal can be worth other values such as one point in FIBA 3x3 basketball competitions or four points in the BIG3 basketball league. "Field goal" is the official terminology used by the National Basketball Association in their rule book, in their box scores and statistics, in referees' rulings. The same term is the official wording used by the National Collegiate Athletic Association and high school basketball. Kareem Abdul-Jabbar holds the NBA record for field goals made in a career with 15,837. Wilt Chamberlain, one of the most prolific scorers of all time, holds the top four spots for most field goals made in a season and has the two top field goal percentages for a season. One of the greatest field-goal shooters of all time is Michael Jordan, who led the NBA in field goals made ten times. Shaquille O'Neal has the record for most seasons with the best field goal percentage, Artis Gilmore has the record for highest career field goal percentage.
Steve Nash was one of the greatest all-around shooters in the history of the NBA, holding the record for 50–40–90 seasons, a mark of all-around shooting for two-point field goals, three-point field goals, free throws. Nash recorded four of the eleven 50–40–90 seasons in NBA history. One type of field goal is called a slam dunk; this occurs when a player jumps near the basket with possession of the ball, throwing the ball down through the basket while airborne. The word "slam" is derived onomatopoeically from the sound of the player's hands hitting, grabbing releasing the hoop. NBA records
1959 Pan American Games
The 3rd Pan American Games were held in Chicago, United States between August 28 and September 7, 1959. One city submitted a bid to host the 1959 Pan American Games, recognized by the Pan American Sports Organization, along with three cities that withdrew their bids. On March 11, 1955, at the IV Pan American Congress in Mexico City, PASO selected Cleveland unanimously to host the III Pan American Games. On April 15, 1957, Cleveland asked PASO to be relieved of their assignment as the host city. Subsequently, both Guatemala City and Rio de Janeiro informed PASO that they would not be able to host the games either. Two cities came forward as candidates host the games, Chicago and São Paulo, on August 3, 1957, Chicago was selected over São Paulo by a vote of 13 to 6. Once Chicago took over the game following Cleveland's withdrawal, there were 18 months left to organize the games; the games were held on-schedule nonetheless. The games were the first Pan American Games; the previous two editions were held in March.
The games opened on August 27, 1959, in sunny 90 °F heat before 40,000 people in Chicago, United States at Soldier Field. To sort this table by nation, total medal count, or any other column, click on the icon next to the column title. Note ^ The medal counts for the United States, Argentina and Canada are disputed. Athletics at Soldier Field Baseball at Wrigley Field and Comiskey Park Basketball at Alumni Gymnasium and Oak Park High School Boxing at Northwest Armoury Cycling at Gately Stadium temporary venue Diving at Portage Park Football at Hanson Stadium and Soldier Field Gymnastics at Navy Pier Modern pentathlon at Waukegan Shooting Range, Great Lakes Naval Training Center, Independence Grove, Portage Park Rowing in the Cal-Sag Channel Sailing in Lake Michigan Swimming at Portage Park Tennis at Lincoln Park Tennis Club Volleyball at Proviso High School Water polo Weightlifting Wrestling at Reavis High School