Plus points No class - no display PPA cover - depending on the subjects there could be less marking PPA cover - lots of variety, not boring PPA cover - gives you a good overview, important for leadership PPA cover - they trust you to maintain order and teach the kids something and think you have the experience to do it Oh. It is also not all about you. You've proved yourself. Maybe they now need to ensure another teacher gets a class and is put to the test. It might be a good move for that other colleague. Because, as I say, it's not just you and your prospects they have to consider.