What do you know about teachers unions? If you think they support educators by negotiating better wages and working conditions, you may be shocked and disturbed to find out the truth.

Today’s teachers unions are well-funded, highly politicized organizations that are hurting—not helping—the public education system in America and keeping even the worst teachers protected. PragerU’s short documentary investigates how these once well-intentioned teachers unions have become the biggest bully in school.