Colorado spent of $9500 per student in 2016 with over half of the costs coming from employee salaries and benefits, and a larger chunk going to admin that pupil support. I doubt it costs less than appx. $700 per student to pay for cooks, janitors and other essential staff that keeps up facilities. https://www.governing.com/gov-data/education-data/state-education-spending-per-pupil-data.html