An undergraduate degree in Physics serves many careers. On one level it may lead to research or teaching, which require a master's degree or doctorate. On another level it provides the basic discipline necessary for a technical career in engineering. On yet another level it provides a basis for management, business, law, or politics. To do this a physics major requires a broad background in physics, chemistry, mathematics, and communication.

Physics majors at Principia may earn either a B.A. or a B.S. degree depending upon whether they desire a broader curriculum or a more professionally-oriented one in physics. An alternate form of the B.A. major is available to secondary education majors.