Solutions: Salman Khan

I don't do this often, but this is a special case. When someone states the obvious truth, it cuts across all lines, and I must post it everywhere.

"If Issac Newton had done calculus videos on YouTube, I wouldn't have to. (assuming he was any good) - Salman Khan"

Why do good students fail in our public schools?
FLIP THE CLASSROOM!
Traditional Classroom Model penalizes you for experimentation and failure, "DO YOU UNDERSTAND THIS?". Kids COMPETE with each other, but does not expect mastery.
Assign the lectures as homework, and do the homework in the classroom.
Pause, work at your own pace. Stay on that bicycle, experiment, failure is OK. Reward success, don't penalize failure. Allow students to COOPERATE, and you will see that your 'slow' students are just as smart as the 'gifted' kids.
But expect mastery.

Watch this video twice.
Build a Global, One World Classroom.