To Sir, with Love is an autobiographical book made into a movie. Both the author of the book and the actor portraying Mark Thackeray (Sidney Poitier) are type 1 in real life.
The 1st video clip is a scene where Thackeray is trying to instill in his students some discipline and standards as he prepares them for their transition into adulthood.
The 2nd video clip is the final scene from the movie where the theme song is sung. The song isn't about type 1 but about what role Thackeray (Sir) played in the students' lives.