If it was just the first class I may cut the students some slack. My campus bookstore doesn't have any good art supplies and a good art supply store is at least 15 minutes away in confusing downtown traffic and cheap #2 pencils and printer paper aren't going to work well in an art class. Add in they may also have books they have to get they could need sometime before getting the things they need. I had to wait a week to get some supplies I wanted for my art classes because I lost my wallet. Fortunately I already had some things, but that first day of sketching was tight as I had limited paper and we were making a lot of sketches.