A Lethal Lesson

This 2021 film appears with several titles, I believe. The plot is fairly predictable with no major surprises, but the red herrings were well-crafted and served up throughout the running time.

The setup is fairly simple, with the odd question of why her best friend is murdered.

Cute kid becomes centre of our heroine's world, as she continues to mentor several hormonally-charged adolescents at her college. So far, so predictable.

The tension builds slowly (the film could have lost 40 minutes in editing without any significant impact) and maintains progress. We ramp up in the last 13 minutes when all becomes clear and the main Antagonist is fimally revealed.

Happy ending.