Not sure just what your experience was, but all states have strict guidelines on student/teacher ratio with the young preK  and K.  In our situation, after 911 happened, lock downs became a MAJOR thing, cameras installed inside and outside of buildings.  Now because of school shootings, all doors are locked and no one may enter the bldg. without being seen on outdoor monitor and escorted inside.  Children may NOT answer or open classroom doors or outside doors.  I know this seems extreme, but child safety has become paramount while in our care.  With trying to reopen bc of the virus crap, parents are not allowed to walk their kids into the building for fear of contamination.  I am so happy I'm finally retired.  Things were so much easier before more and more government interference.