42 is a very interesting Tech. school in Paris. We are not taught by teachers but self learning and peer evaluations is how we progress in the course. The course is designed to teach you an exhaustive list of things ranging from re-writing C system functions like printf, to creating our own C libraries. We also learn Computer graphics by re-coding the legendary Wolf3D game engine. We learn web development by re-coding an "nginx-like" webserver and a lot more