From Netflix:

Anyone who’s ever been in a classroom will be touched by this
moving, mostly-true story of famed East L.A. math teacher Jaime
Escalante ( Edward James Olmos), who finds himself in a classroom
of rebellious remedial-math students. He stuns fellow faculty members
with his plans to teach AP Calculus, and even more when the mostly
Hispanic teens (including Lou Diamond Phillips as Angel Guzman)
overcome the odds and eventually go the distance.

NetFlix provides reviews by its viewers, all of whom really liked
this feel-good A movie for everyone. Not at all sappy.