Steve Heimler, better known online as Heimler's History, is a YouTuber who makes educational videos about various Advanced Placement (AP) courses, specifically AP US History, World History, Government, and Macroeconomics. Heimler also grades essays for the national AP exam. The purpose of his channel is to "build the confidence and skills [students] need to get an A in their class and a 5 on their AP Exam," and he describes his channel as a "healthy mixture of seriousness and buffoonery." Heimler uploads videos weekly during the school year and intermittently during the summer.