Long Beach Polytechnic High School, founded in 1895 as Long Beach High School, is a four-year public high school located at 1600 Atlantic Avenue in Long Beach, California, United States. The school serves portions of Long Beach, including Bixby Knolls, and some parts of the cities of Signal Hill and Lakewood. Polytechnic is the flagship high school of the Long Beach Unified School District. It is a large urban high school with about 4,000 students.

The Long Beach Unified School District is a school district headquartered in Long Beach, California, United States. Established in 1885, Long Beach Unified School District now educates 81,000 students in 84 public schools in the cities of Long Beach, Lakewood, Signal Hill, Carson, and Avalon on Catalina Island. The school district is the third largest in California and serves one of the most diverse large cities in the United States. The student population is 53.1 percent Hispanic, 15.6 percent African American, 15.2 percent white, 11.2 percent Asian, 3 percent multi-race, 1.7 percent Pacific Islander and 0.2 percent Native American. More than two-thirds of the student population come from lower-income households and qualify for free and reduced price meals. The school district employs more than 8,000 people, making it the largest employer in Long Beach.