Sarah went to private K, and there were 19 kids with a teacher and a full time assistant.
In (public) first she had 23 with a teacher and a half time assistant (whose main function was to work with ESOL kids but they would help out wherever was needed really). In 2nd she had 21 kids in her class with one teacher and a quarter time ESOL aide.
ETA: Some schools are designated Title 1 (certain percentage of student below the poverty level) and they get additional funding to keep classes K-2 (maybe K-3?) below a certain number.
Beth, mom to older DD (8/01) and younger DD (10/06) and always missing Leah (4/22 - 5/1/05)