Knallharte Prinzipal was released in the year 1989。Knallharte Prinzipal is also called as Lean on Me, Meu Mestre, Luota minuun, Hårt mot hårt, Escuela de rebeldes, Conta su di me, Confia em Mim。

An arrogant and unorthodox teacher returns as principal to the idyllic high school from which he had earlier been fired to find it a den of drug abuse, gang violence and urban despair. Eventually his successful, though unorthodox, methods lead to a clash with city officials that threatens to undo all his efforts. Based on a true story.

Knallharte Prinzipal actors and actresses include Beverly Todd, Karen Malina White, Michael Beach, Robert Guillaume。