I feel like our daycare moves the kids between rooms so fast! The rooms are:

0-12mo
12-18 mo
18-24 mo
24-30 mo
30-36 mo
3 yrs
4 yrs
5 yrs

I wish they would combine the four toddler groups into two age groups (even if they had two of each age group!) so they didn't have to move every 6 months