It depends on the region, the age of the school, the wealth and demographics of the community. The poorer the area, its more likely the schools are overcrowded

It depends on the region, the age of the school, the wealth and demographics of the community. The poorer the area, its more likely the schools are overcrowded concrete boxes built in the 60s-80s. US Schooling is very inconsistent and varies a huge amount by municipality.