I sucked in almost all my classes for the time I went to uni. A part of me really started believing that I was simply dumb at all those subjects I was doing bad in. In last six months since I took a leave, I have enjoyed learning stuff on my own that I can recall being taught in classes I hated.

Now it is almost like when I do go back to school someday, I will be better prepared having self-studied what is being taught in class. A whole new reason to leave school: so you can better prepare yourself for it=)

Do what works for you!