I have no idea how many there will be in DS2's kindergarten class next year. When my older 3 started school, there were two classes of about 22-25 students in each. This year there were enough to have 3 classes of 15, and I think they are averaging about 18 in each now with new enrollments through the year. I don't think there are going to be that many in DS2's year group though. He will know probably 10 kids from preschool that will go to his school.