We have gone through headphones this year like crazy! We use them often, for both computer lab and when we use iPads in our classroom for small group activities. Some students chew on the cords, some yank out the cords, and some headphones have been faulty and broken off inside the iPads. If your child's headphones were faulty, you were not charged for new headphones. If the cord was chewed or broken off, you will find a charge on your school bill for a new set. I'm not sure a heavier duty pair would solve our problem, someone borrowed my heavy duty computer headphones and broke those!