Does anybody let their kids bike to school? My children have been begging me to let them. They will be in 1st and 3rd grade this coming fall. It's probably only about a 5-10 minute commute, kind of trafficky in the morning around the school. They have a bike rack out front of the school where they could lock them up with a cable lock. But I am not sure what they would do with their helmets during the day. I don't think they will fit in their small cubbyholes in the classroom. Anybody else's kids bike to school? At what age did they start? Willing to hear anyone's advice or tips on this subject matter.