Classes are held on the Columbia University Morningside Campus during the entire academic year from September through May. The Columbia University Science Honors Program (SHP) is a highly selective program for high school students who have a strong interest in the sciences and mathematics. The SHP holds classes at Columbia from 10:00am. to 12:30pm. on Saturdays throughout the academic year. Courses are primarily in the physical, chemical, biological, behavioral, and computing sciences; and instructors are scientists and mathematicians who are actively engaged in research at the University. During the past few years, the SHP has offered multiple courses. The program and its courses have no tuition charges; however, families of SHP participants are asked to consider making voluntary contributions to help support the program.