Stupid school teachers! They didn't even recognize the difference between a bomb, an ied, and a clock.
BTW the cops say the photo does not completely resemble ahmed's device but they cannot release photos or records of the interview that led to his arrest without family permission, The family has yet to pick up the device.
More on the Micronta muslim
http://www.redstate.com/2015/09/18/ahmed-didnt-build-radio-shack-sold-standwithahmed/