The largest category of admin staff in our county is paraeducators, media assistants, lunch-hour aides & transportation staff. Data from Pg 9
www.montgomeryschoolsmd.org/siteassets/d...

For time sake, I looked at the budget of our county, largest school district in Maryland (which includes last yr, this yr, next yr). Based on this, I can say
Administrative staff is not administrators but Special Education (speech, PT/OT), Librarians, Counselor, Psychologist, Social Worker etc.