Talk about stand and deliver. For two years in a row (2002 and 2003), SEM, one of DISD's court-mandated magnet high schools, had more minority students pass the advanced placement calculus exam than any other school in the nation. It's even more remarkable considering how small the student body is. With only 400 students, 113 passed the test in 2003; of those, 60 were Hispanic or African-American. On the AP chemistry exam, minority students at SEM tied for first place in the state; of the 23 SEM students who passed, 10 were minorities. "It always starts with the teacher," says Gregg Fleisher, president of the nonprofit AP Strategies, which works with school districts and businesses to manage AP programs. "And SEM Principal Richard White has recruited some of the best calculus teachers in the state." The program is also supported by the Texas Instruments Foundation and the Advanced Academic Services department in DISD, which provides lead teachers, curriculum and other materials. We know the program works. Now, why can't it work everywhere?