1950's and 1960's school administration building was about three rooms, a very small building. It gave office space for a superintendent and a couple of secretaries. That's all they needed. We had the same number of students then as now, about 15,000 students.
But notice how the administration overhead has changed.
wfisd administration bldg 1961

New huge school administration building since the early 90's when education became more and more federalized, socialized, psychologized, and dumized. administration bldg 2000

school administration size 2000 center

New school purposes include: Mikhail Gorbachev's WHOLE CHILD Program
All co-ordinated by the national organization.
Teacher Assessment

Community Learning Center

Government Smart Card Migration Strategy
Gov Smart Card Strategy