Sting Ops in High Schools?

I recently read an article in Boston about a sting op at high schools in Weymouth, Massachusetts. Police set up checkpoints at 13 high schools in the area to catch teens in action.

Out of the 802 students stopped at checkpoints, 151 were not buckled up, 49 were driving their friends and four were driving while talking on cell phones.

The sting op was put into effect by the Registry of Motor Vehicles to again educate students on safe driving.

Do you think a sting op would be an effective tool to teach/discipline students while heading in/leaving campus? Or, do you feel that a sting op is taking it too far?