I'm in the UK and I wore throughout the majority of my primary and secondary school years and I believe my education never suffered. We had regular break times and lunch time so in essence there was 3 opportunities to be changed throughout the day. I had no bowel control, although not officially classed as a medical condition, more psychological according to the medics. All the teachers throughout my school years knew, so did fellow pupils. Some teachers were fine with it, one or two took the opportunity to humiliate me at various stages, along with fellow pupils. There were 2 school nurses who changed me every break time and when I did have a bad accident during lesson time, I made it up at break times, because I wanted to learn. There were times when relief staff who were unaware of the situation were shocked and disgusted. Nowadays, from time to time stuff does reappear via various people I am friends on Facebook with. Like when the above article came out, somebody inboxed it me. People never forget the strange times.