Don't sound desperate for a job in an interview. "I want this job so bad." "I will do whatever it takes." etc. It comes across as weakness. There are two types that I can see in candidates through the interview panels I have been on. One is the candidate who most likely is new but they are desperate and don't send the message that they can handle the job on their own. They are wiling to learn and do what is asked but they come across as if someone will need to hold their hand. The second type is the candidate that has confidence. They can be new as well. They answer the questions about their ideas on educational philosophy, classroom management, differentiating instruction, communicating with staff and parents, etc. They provide clear examples of how they run their class. They provide convincing evidence that they will come on board and get it done with little help or hand holding. They do not sound desperate, yet rather turn the tables so the school is desperate to hire a person like this to teach there. It is all in how you carry yourself and your confidence. Schools know new teachers will probably need help and some guidance, but they like the teacher that comes in with a lot of confidence. Also, don't confuse confidence with arrogance because we are always learning as teachers and never know it all.