From NetFlix:

When principal Joe Clark ( Morgan Freeman) takes over decaying
Eastside High School, he’s faced with students wearing gang colors
and graffiti-covered walls. Determined to do anything he must to
turn the school around, he expels suspected drug dealers, padlocks
doors and demands effort and results from students, staff and
parents. Autocratic to a fault, this real-life educator put it all on
the line to give kids a chance.

At first I was not taken with the film. Morgan Freeman seemed just too
much the tough guy. But the movie makes sense (and is based on
reality). There is suspense toward the end of the film.

As an alternative, try “Stand and Deliver”.