Dear [principal's name],

It's with [describe emotions] that I share my plans to retire [retirement date]. I have loved working as a [specialization in teaching] for the last [number of years]. I served [number of years] at [school name], and I'm honored to end my career here.

It would be my privilege to assist you and the administrative team in finding a replacement for my position before my last day of work. Please let me know how I can best help during this process and time of transition.

I want to thank you, [principal name], for your support during my [number of years] at [name of school]. During my time here, I've been able to work with, by my count, over [number of students], providing not just instruction in [subject area], but also offering guidance, support and mentorship to my students. I will always think back fondly on my time as an educator.

Please let me know what steps I need to take to formally begin the retirement process. I have [list any steps or actions you've already taken]. I appreciate your guidance in handling the paperwork as soon as possible.

Thank you again for your tireless support and thoughtful guidance of [name of school].

Sincerely,