Parañaque National High School (abbreviated as PNHS; Filipino: Mataas na Paaralang Pambansa ng Parañaque) formerly known as Parañaque Municipal High School is a secondary public school, classified as a, whose main campus is located at Kay Talise Street and Dr. A. Santos Avenue, San Dionisio, Parañaque. Aside from the main campus in San Dionisio; the school currently has annexes in Baclaran and San Isidro. It also has nine former annexes located in Baclaran, Don Bosco, Don Galo, La Huerta, Marcelo Green, San Martin de Porres, San Antonio, Sto. Niño and Tambo; all independent from the school administration. The main campus of the school is notable for having one of the largest school populations in the Philippines and even in Asia. It was established on February 24, 1969, and made into a national high school by virtue of RA No. 7841 on July 25, 1994. The current principal of the main campus is Gerry A. Lumaban, Principal IV.

Dr. Arcadio Santos Avenue or Dr. Santos Avenue, formerly and still referred to as Sucat Road or Parañaque–Sucat Road, is the primary east–west thoroughfare in Parañaque, southern Metro Manila, Philippines. The avenue's western end is in Barangay San Dionisio as the continuation of Ninoy Aquino Avenue. Physically, Ninoy Aquino Avenue connects northbound to NAIA Road in Pasay which, in turn, continues west to Roxas Boulevard back in Parañaque, where it ends. Its eastern end is at the East Service Road, which runs parallel to South Luzon Expressway, in Barangay Sucat, Muntinlupa, where it becomes Meralco Road to service the rest of the route to Sucat railway station.