I don't know if this would work in high school but in college when we checked equipment out we had to return it in good condition. It was checked over when we turned it back in. If we turned in equipment late or broken then we were docked from using the darkroom facilities or checking out equipment. If this interfered with a project deadline that was our problem. This system worked pretty well in a school of approx. 500 photo students and made everybody a lot more careful with the equipment. Also, if there were only one or two of a certain item and they were all broken then everybody who needed them was out of luck. If there was a lot of damage to an item I suppose students were billed (this would be easy to do if students pay tuition) but I never found out personally!