Maybe talking with her about WHY she doesn't want to go to school... it might be something simple and it might be something very important.

She sounds like she already has low self esteem if she is feeling she isn't good enough to just do a good job but wants things perfect... she needs more praise for even the little things she does right, on time, or that she thinks of to do, maybe?

Acting out is never good... for children or adults. I still act out from time to time...and it doesn't help me one bit but makes me feel worse. Sounds to me like there's a lot of anger and frustration and the tantrums are the only way she (you) know how to process it.