Freshman - Our Future?

Although my secondary research of these creatures we call "freshmen" suggests that we are of the same species, observations* over the past few days have led this scientist to believe otherwise. Generally indistinguishable from us, they show several distinctive features. Perhaps these "people" we have always overlooked are in fact an entirely different species?
Although you may see sophomores, juniors, and seniors interacting with each other on occasion, "freshmen" seem to have their own completely separate social system. They can often be seen huddled in groups, performing strange rituals. You may be saying at this point, "Well, doesn't everybody else do that too?" Ask yourself this, "Is everybody else a freshman?" I think not.
Besides the obvious societal differences, a certain physical difference can be found as well. If they were the same species as us, why would they be so much smaller?* This relative decrease in physical height* and mental capacity* would seem to point to the only logical answer. Freshman are a new breed of human, and they have devolved.**
*Observations "may" have been completely selective and scientifically unsound
**May or may not follow common standards of "logic"