That's exactly what's happened to my school. One student in year 7 came back from Mexico, got tested and went to school before getting the results. When they got them, they'd been back a week. I, like everyone else am not concerned with swine flu, especially here with the inconclusive results, it's more to do with asking teachers about any uncertainties in the courses. Anyway, they closed for a week and are reopening tomorrow. This week I've only got general studies so it wouldn't be disastrous if we were closed this week instead. I got a week of revising how I prefer out of it though so it's all good for me, don't know about when your exams are timetabled, they'll sort something out.