More broadly, my point was really about businesses and restaurants. If a pizza place were to hang a sign that said "No Spanish allowed", I would have no problem with it -- and I think the Constitution would have no problem with it. Sure, it might be a stupid business decision, and a lot of people would freak out, but if a restaurants wants to restrict my speech, I would shrug and move along.
I just think it's worth pointing out that the Constitution limits the federal government: not us. In this particular case, if the junior college is a (state) government institution, then I guess I see that they did a bad thing.
I agree with the point about the restaurant. I think government overreaches when they prohibit a pizza place from doing as you suggest (they do prohibit it in a lot of cites, and it ticks me off).
But under the 14th Amendment, the State Governments are bound by the same Constitution as the Federal Government. This interpretation of the 14th has led to a lot of mischief, but we’re seeing some good results when this principle is applied to the second amendment. In the end, however, this College will get away with this.