There was someone here who was saying that their child was being kept in
from recess to finish work.

In TN, 30 minutes of PE a day is mandated in elementary school. If the
school doesn't have a PE class for 30 minutes a day, the days they don't
have PE, the students are supposed to have "structured or unstructured
physical activities"-ie, recess. So you might want to check the PE
requirements, because recess may be mandated via those.

Just thought this might be helpful.