You have put together the resume, the cover letter and gone through the interview - congratulations! Don't stop now - there is at least one more step before you are through. The thank you letter can not be neglected in today's competitive market. You need an edge over the other candidates and you can increase your chance of being hired by writing them - by marketing yourself to the school districts one more time. The bottom line is that less than 10% of interviewees ever follow-up interviews with thank you letters. If you do, you rise that much higher to the top of the candidate pool.