Originally Posted by
scroca
You sure you don't have access to a locker room with a shower? Many schools have them.
If not, +1 on taking a shower before the ride to school and wearing clean clothes. And Merino wool is terrific.
By the way, all that about trying not to sweat is nonsense.
This is the answer. What school does not have locker room with showers? Just get to school early and shower when you get there.