"but before vacation please enroll yourself in the local educational system and learn how to properly spell."
"That's a sentence fragment, go back to school and learn proper grammer."
O.K., I know that I am late to the party, but I have to point out that you used a run-on sentence and that you misspelled grammar.
Not that I care or anything. I am just being a pain. In fact, I had to re-read and revise my own post about 4 times in hopes that I would catch all the mistakes.