Where the hell is the picture of the "bomb clock"? I see a picture of the kid next to circuit board. If that is the "bomb clock" then a lot of adults need to get slapped upside the head.
The point being, what he is sitting next to could not conceivably be considered a bomb by anybody with a brain between their ears. Now, if the "clock" was a display protruding from a small box, where you can't see what is going on inside the box (as the story implies), then maybe (just maybe) there was a tiny shred of justification for their actions. However, maybe a more appropriate response (assuming the thing actually resembled a bomb) would have been to say "hey son, could you please show me what's inside the box?" If you were TRULY worried about it being a bomb, maybe evacuating the school and calling in the bomb squad would have been appropriate. I would expect any of those responses by the teachers if the kid was white, black, brown, purple, or green. But no, these backwards mother fuckers see a brown kid with a "muslim sounding" name and all hell breaks loose.
If the second teacher TRULY thought this was a bomb, why the fuck would you put it in your desk and leave it there for hours? They need to be fired, immediately, for failing to act responsibly in a "dangerous" situation. If the police were TRULY worried that this device was a bomb they all need to be fired, immediately, for failing to properly handle a suspected explosive device.
Oh, reading the story again, nobody ever thought it was ACTUALLY a bomb, they just thought it kinda looked like one. First teacher probably should be talked to, if he thought the device could be perceived as a threat (saying "you probably shouldn't show that to any one else") he should have confiscated it on the spot. Second teacher acted appropriately. Knew it wasn't actually a bomb, just thought it looked like one, so she confiscated it and reported it to the principle. I would expect the same thing to happen to someone that brought in something that could be perceived as a bomb, gun, knife, whatever. Principal? Yeah, he needs to be fired. Threatening to expel a student for not providing a written statement? Yeah, not cool. Intimidating a 14 year old by forcing a written statement without a parent present? I'd be pissed if they did that to my kids. The police involved, definitely reprimanded. Interrogating a minor without a parent present, big no-no. Arresting him without charging him with a crime? Also a no-no.