<p>I don’t know, QuantMech. Just how their schedule falls, I guess. The pre-pharmacy students are typically sophomores by the time they take physics, and the pre-engineers start the physics sequence in their freshman spring. It’s not like they absolutely couldn’t take the spring course (in fact a few of the spring students were repeating in an attempt to get a passable grade), however they would probably need to take the second semester in the summer so as not to get off track altogether.</p>