Middle School Grammar Help Needed!

I have concluded that the schools don't even attempt to teach grammar anymore so that it will be mastered for the long term. They describe grammar, they give out worksheets ABOUT grammar, but they don't give ANY worksheets so the students can actually practice grammar. In other words, let's figure out how to do grammar in a conceptual manner and, voila, every kid will be able to create sentences in the "correct" manner.

HELP!

I found www.aleks.com to fix the problems with math, but I'm looking for a program like this to help with grammar. I could get out my old Katharine Gibbs Handbook of Business English, but it doesn't come with any worksheets. Furthermore, the hierarchical model of aleks combined with the ability to have instant feedback just works! And if you get the concept by getting it correct five times, Aleks moves you onto the next concept so no one is doing mindless rote because it moves as quickly as the individual moves.

Anyone have any ideas?