This page was sent to you by:  carnen@mac.com TECHNOLOGY   | December 05, 2011 Grading the Digital School:  Online Learning, Personalized By SOMINI SENGUPTA At least 36 schools nationwide are combining teacher-led lessons with computer-based lectures and exercises using a software program based on Salman Khan's popular YouTube lessons. Advertisement The Descendants Starring George Clooney, and directed by Alexander Payne (Sideways, Election) Now Playing in theaters. Click here to watch the trailer Copyright 2011  The New York Times Company | Privacy Policy