We toured a preschool this morning that we really like. It is small, simple and has a heavy focus on art and play. We know we want to sign DD up but they surprised us by saying DD could enter either their 3s or 4s program. They have some flexibility based on DD's birthday and current enrollment.

DD is 3 years 8 months (will turn 4 in December). She has never been in daycare or school. With the cut off in our town (and really all surrounding towns) she will start kindergarten in 2020. So will be doing two years of preschool.

The 3s program meets two days a week from 8:30-11:45. They will have a max of 12 kids.

The 4s program meets three days a week from 8:30-12. They will have a max of 20 kids.

We are worried she will be bored in the 3s as one of the oldest. But are concerned she will be a bit behind the other kids in the 4s program who have likely had a year of preschool before.

Looking for any insight/opinions? Which would you choose.