Welcome to the world of undergraduate research at Caltech! Research has always been a big part of the undergraduate experience at Caltech. In fact, today it is one of the main reasons why students choose to come to Caltech. The low student-faculty ratio (3:1) provides undergraduates with many opportunities to be involved in cutting-edge scientific research. Considering the Caltech professorial faculty and the postdoctoral population, there is at least one Ph.D.-level researcher for every undergraduate!