Follow Up: it is a national test, so he couldn't go to the bathroom, and I couldn't disrupt the test by speaking. I stood nearby and cleared my throat loudly, that seemed to work, and he emerged from his jumper (sweater) fairly quickly. I would say given that all he wrote on the test was his name, he probably did not do very well. Finally, there are some very nasty, judgemental people on here. Perhaps you should try to live a little more kindly and gently.