@KayB55 I'm not a teacher but I do work in a school so understand the process. Some people are able to work through chemo but I wasn't one of them. And the effects are cumulative so if it's making you tired now, it's likely to get a bit worse. Chemo didn't affect me horrendously but I did rest for a lot of it. Radiation, while for most fairly easy, does also make you tired. I took 3 terms off - 1, 2 and 3 in 2018, going back for Term 4. I felt that I was ready and needed to start getting back to normal. In hindsight, I couldn't have been more wrong. Getting through that term left me so exhausted I was often near tears. Add to that an unhealthy dose of chemo brain. This year has been a bit better but by about Week 3 each term (so about now), I'm feeling that each day is a mountain to climb. Of course, you might be feeling pretty good. I know that some people sail through treatment and are fine working during and after, like Afraser, and you might be one of them in which case, please ignore. However, if you're not like that and you can afford to take more time, or at the very least, reduce your hours significantly, my advice is to do so. If nothing else, it will give you time to concentrate on yourself and your physical and mental well-being.