[phonypc]

Who's using clipless pedals to putt around their school campus?

If you're doing some sort of recreational/sport biking, then ya, a lot more people are going to agree you should be wearing a helmet.

[taeric]

Fair, though my point was more that experienced riders that use clipless are still prone to falling.

Around campus, problems from not balancing with a backpack are more likely.

Though, I do mean to say I don't think it is a certainty. Just that it is more likely than you'd think. And helmets are good at low speeds. They are not just a high speed protection.