<p>OK! If you define small is a enrollment of 5k to 15k then the sky is the limit. All of the Ivies and CalTech and MIT are excellent choices. By the way at most schools the number of physics majors is tiny compared to engineering, biology or chemistry departments. Often potential physic majors are offered an advanced intro course and you would need to work hard to avoid getting to known the faculty. By the way it is common for undergraduates to involved in a research project. I have known several undergraduate physic majors at these schools that worked in the labs of Nobel laureates.</p>