I have had the privilege of helping to interview for a new role at our organisation. There were three excellent and top quality interviewees who each had very different personalities but similar skill sets.
So here is what I observed -
Walk into the room full of confidence and take advantage of the room.
Don't talk too much. If the interview panel go quiet or stop asking you leading questions then shut up and start listening.
What you do outside of work is just as important as what you do inside work. Being involved in clubs and teams shows that you think about others and are involved in the community.
Use multiple examples and stories from your past. Try not to get stuck repeating the same story or point.
Name drop but don't drop bombs. That is mention names of people that you have genuinely worked with and who know you. Don't say you know the CE or similar if you really don't.
Make eye contact with the interviewers. When you shake hands with someone - look at them. It's that simple.
Dress nicely completely in your own style but in a way that fits the role that you are applying for.
Talk about what you think the key goals would be for the organisation and how you will help achieve those goals. In education - it's all about helping people succeed and achieve.
These are my observations from three very classy and high profile applicants. Unfortunately there's only one position on offer. Lets hope the best candidate accepts the offer when it comes!