"$$$$ for every "A", $$ for every "B", reduction of above for any "C" and complete forfeiture for any "D."

"Also, 2 hours at the dining room table five nights-a-week. No TV. No music. No phone. I didn't force them to do homework -if they just wanted to stare at each other for two hours, OK with me. They were not as pleased with this as they were with 'bribery' and did try sitting there and day-dreaming for a couple of nights. And then, the strangest thing happened. Their friends thought this arrangement was so novel, they had to see for themselves. For the next two years, our house became a study hall for 8-10 kids almost every night."

mm's method.