Bethel Park Senior High School: View of students coming out of Building #1 between classes. The new Bethel Senior High School was dedicated on October 23, 1960, but the campus would not grow to its current size until seven years later. Phase II of the construction was completed in 1964 with the addition of another academic building and the industrial arts building. Phase III was completed in 1967 with the construction of the fourth academic building and a 6,300 seat football stadium and track, three tennis courts, seven basketball courts, and a baseball field.