<p>Hey I was wondering if anyone knew if there was a policy or rule about students having a guest in a class... my gf also wants to attend columbia and i was thinkin i could give her a tour one of these days i already know she can come to the dorm and eat at john jay .. wondering if i could take her to a class or two. thanks.</p>
<p>If you're in a big lecture class, just show up with her and nobody will notice/care. If you're taking her to a small class (core class, etc.), you might want to email your prof a couple days before and get permission.</p>