Below are data from the National Center for Education Statistics. I just highligted the data between 2005 and 2012 (last year available).
Much/Most of this tracks through the recession so the numbers are interesting to me.
Click on image to make a bit larger.
Through the budget cuts of the recession school level staffing, notably teachers, librarians, and counselors decreased in numbers, but Administrative staff "downtown" increased (probably lots of the "support staff" on the right side were downtown staff as well).
If you do the additions and subtractions you pretty end up with, not a net loss of jobs in education, but a relative status quo. School level jobs (with exception of principals) just morphed on over to the administration offices downtown.