For every treacly DANGEROUS MINDS, which turns a true story into a nostalgic valentine to the days when bad kids were merely delinquent and a dedicated teacher was more than the equal of inner-city punks, there's a sleazy
SUBSTITUTE, which suggests that the answer to troublesome students is to blast their disrespectful, gun-toting asses to kingdom come. The surprise is finding the take-no-prisoners, exploitation-movie message in such a high-toned package, right down to the closing credit that assures us that this
movie was written by a real-life teacher. Trevor Garfield (Samuel L. Jackson) has already had one near-fatal encounter with a sociopathic student in Brook...