tantrums

my 5 yr old boy has been tantruming all over the place cause he doesnt want to go to preschool. he says the kids dont like him and wont let him play, of course he is always saying "your a poo poo head" hes been saying it alot, and when hes real mad, hell call you an *******. he knows all the curse words and pending on how angry he gets, he has no problem using them. And yes, hes a charming as he could be when he wants to be.

this has been getting worse as time goes on, when he is ready for school, he cries and holds onto my leg and cries "dont go, dont go" while i am ready to go to work, ........

im not sure whats going on with him, hes therapist keep telling us to keep the routine no matter how much he cries. He can tantrum for hours..so i can relate to the problems, just more parts to the journey