Describe all work experience in detail, beginning with your current or most recent job. To write an application letter for a teaching position, start with a formal greeting and clearly state your interest in the role.A candidate must apply and be eligible for a valid Florida Educator's Certificate for the subject and level in which hired to. This helpful guide will break down how to write a cover letter for teachers and provide some practical tips you can use to shine in the hiring process. Once hired you have 3 years to get the Professional Certification (you will be required to take about 15 credit hours of Ed classes). Make it job-specific. Applying for teaching jobs? Your teacher cover letter can make or break your application.