Yeah the last time I bought something there the SA gave me a look when I showed my student card. She asked if I'm still in school and I said yes (which I am). She then asked for an email, I gave the school one because I wasn't sure if she was trying to 'book' me.
Most likely they are taking a hard line more often now due to this article, which was written because the journalist got the idea from seeing, on another forum, non-students bragging about using student discounts:
Easily the best mall-store -- but only 40% off already-sales does not warrant going through the swarms of people expected tomorrow in Frisco.
+1. I find the clothes I liked the best cost the most, and even marked down, were still too expensive. Almost bought a fair isle sweater, but decided not to since I thought the sweater would have looked better without the pattern. Club Monaco has some nice stuff, but there's nothing I absolutely need to have.