I know it's a difficult budget climate, but that doesn't change findings like these:
Smaller classes (13-17, instead of 22-25), from K to 3, improved black student test scores 7 to 10 percentile points, which was far better than white student improvement.
Smaller K to 3 classes ended up in more black students taking college entrance exams. The black-white college exam gap decreased by 60 percent following the smaller class size experience.
I'm not making a policy suggestion...I'm just presenting the data.