T.G.
When my son was 4 he was at preschool, and he was doing fine. Just like your daughter, loved school and couldn't wait to go. I noticed a change in his desire to go, crying, saying he didn't want to go etc. I spoke to the teacher. She said she had noticed the same but we couldn't come up with a reason. It wasn't until she mentioned that one of his "buddies" had moved that we both had our revelation. She told me that he and this other boy were very close and played together pretty exclusively. Once he left my son was at a loss and started to not like school. The teacher and I both worked at it. She made sure that he was playing with other groups of kids and I worked at it from home making play-dates and park trips. She may not understand why she doesn't like school that is why you get all the different answers. My son never told us that his friend had moved and that is why he didn't like school. We got all the different answers just like you. Check with her teachers and see if they have noticed anything. Also, I read one of the other answers about the class structure and that may be a part of the problem too. My 3 year old just started not liking the daycare/preschool he is at because they go to more of a "camp" schedule in the summer vs. the more structured "school" schedule. He was fine all year, but now doesn't like "camp" and wants to go to school again. Thankfully that starts again in a couple weeks. Hope you find out why she isn't have a good time, take care!