Admission to some programs at all degree levels can be very competitive, and some first professional degree programs limit admission to applicants from US colleges only. Because most liberal arts colleges are smaller than universities, classes tend to be smaller and more personal attention is available. While students are exposed to a broad base of courses and sciences rather than preparing for a specific career, they select at least one area of in-depth study which is their college 'major'. Universities are generally larger and include a liberal arts college, as well as some professional colleges and graduate programs. Universities offer a greater range of academic choices and may provide more extensive resources.
Class size reflects institutional size.
Some classes will be taught by graduate students. Professors at major universities are involved in research which adds to the vitality of the academic community but may draw energy and resources away from undergraduate teaching. Technical Institutes and Professional Schools enrol students who have made clear decisions about what they want to study and emphasise preparation for specific careers. You will want to be quite sure of your future direction before selecting one of these options. The other major point you should consider is campus life.