That’s all true, but I’m not telling students it’s ok to wear jeans. I only wear jeans if I’m on office hours. No one has ever said anything about students wearing jeans, but it’s a gut feel on my part of this reply. Recurrent seldom wear wear jeans any more.
But summer months, wear long sleeves. The training center has been running cool. I have clas rooms down to 64 or so in the morning, and warms to about 74 with class body heat.

My perspectives only for now.
Reeves