<p>Basically all undergrads who are accepted apply at the end of 1st semester junior year. They participate in the program 2d semester junior year and 1st semester senior year. A freshman would not get in. I’ve heard of 1 sophomore getting accepted, but that’s really, really, really rare. It’s a great program, so apply if you want! But you have to understand that the chances are itty-bitty for anyone!</p>