The Substitute 2: School's Out

The name of this movie is The Substitute 2: School's Out released in 1998-08-01 and it's main theme is When teacher Randall Thomasson is killed during a carjacking, an unexpected visitor shows up at his funeral - his estranged brother, Karl Thomasson. An ex-Green Beret turned mercenary, Karl signs on as a new substitute teacher in order to investigate Randall's murder..