As well as specific advice on this website there is lots of generic advice that is worth checking out when you are putting together your secondary / middle school teacher resume, including samples / examples and cover letters.
This Middle school teacher resume is a very helpful resource which informs you the action, words, and descriptions that are to be included. It also provides you with an illustration in the form of sample resume for middle school teacher.
Middle School Teacher Resume Samples - Best Sample Resume
This Middle school teacher resume is an excellent resource for the candidates applying for this post. It gives you a brief summary and sample which illustrates the best method for writing a resume.