Kids are just playing on it so they can sit at home playing on there nerdy little computer games.....I used to give the teachers loads of shit when I was younger and I never learnt feck all......I wish 1of my teachers gave me a slap in the mouth and I would of sat quiet and learnt a lot more....
However Sellotape across the mouth isn't really going to keep them quest as they would of just taken it off,...I think it was meant as a joke and has got out if hand...one my teachers locked me in the book room as a Laff ....I thought it was mint....wasted 25 mons of the class lol