I feel so u happy right now why is my 9yr old so difficult like the teacher all her teachers from…

I feel so u happy right now why is my 9yr old so difficult like the teacher all her teachers from kindergarten till now 3rd grade tell me the same thing she never finishes a task ever and she got evaluated and she passed so now why does she do that well all the teachers determined its maturity and its driving me crazy she csnt do anything without taking forever finds reasons to stall always !!!!!!