Louis C.K. is busy promoting the new season of Louie (which premieres on Monday, May 5th), and he’s also taking advantage of the increased media attention to slam the frenzy of standardized testing that NYC public school students must endure. Last night, while appearing on The Late Show with David Letterman, the C.K. explained, “The way I understand it, if a school’s kids don’t test well, they burn the school down. So it’s pretty high pressure.” Earlier in the week, C.K. blasted the questions his daughters—ages 9 and 12—are facing, Tweeting photographs of the problems, “My kids used to love math. Now it makes them cry. Thanks standardized testing and common core!” He also took the time to reply, via Twitter, to people who think he’s wrong (all while maintaining his support for public school teachers).