These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Crowning Moment of Heartwarming: In 2010, it was revealed that the real Escalante did not have insurance to cover the chemo he would need to fight his thyroid cancer. Edward James Olmos (among other cast members and some of Escalante's former actual students) stepped in and started a fund to help him pay for it. Sadly, he died in March of 2010.
Dude, Not Funny!: An in-universe example; Escalante makes fun of a girl who is struggling with personal problems. He realizes his mistakes later on.
Harsher in Hindsight: Mr. Escalante has a heart attack at one point in the movie, which may serve as this to some people after the real Jaime Escalante died.