I noticed that nearly every year some schools in my region seem to have at least one job advertised in a particular subject. These aren't challenging schools where you'd expect higher turnover, but in schools with very good reputations and in some cases well known private schools.
Would this put you off at all from applying? I would've thought such schools would retain staff for much longer, although the subject I'm looking at is a core subject where I guess they have more options to move elsewhere.