Interviews for teaching posts come in several forms, but are always tough, rigorous and – above all – nerve-wracking for the interviewee. The internet is full of hints and tips for interview success, some of which are contradictory. The links below are focused specifically on education jobs, and are particularly useful.
This interactive mock-interview is particularly handy, as the answers you choose lead to a variety of related follow-up questions. Really good for thinking through possible questions and preparing yourself.
This Guardian article is an amusing but very sensible source of advice, and there are links to interesting related articles:
The basic message to take away from these and other sources of advice is to prepare thoroughly and stay calm, and it’s hard to imagine going too far wrong if you do. Best of luck!