We typically try to keep our classes to between 20-30 people. The most important priority for DevMountain is to provide students with the best possible environment to learn. We have come to find that anything over 30 people takes away from learning through less focused attention. On the other hand, anything less than 20 people often takes away opportunities for peer-to-peer learning and group projects. We have found that 20-30 is the sweet spot for both the happiest students, and the very best results.