[Your Full Name]
[Your Address]
[City, State ZIP Code]
[Your Email Address]
[Your Phone Number]

[Date]

[Principal's Name]
[Principal's Title]
[School Name]
[School Address]
[City, State ZIP Code]

Dear [Principal's Name],

I am writing to formally resign from my position as [Subject/Grade] Teacher at [School Name], effective [Date]. I understand this falls during the academic year, and I sincerely apologize for any inconvenience this timing may cause.

Due to [brief reason such as "unforeseen family circumstances" or "an unexpected career opportunity"], I must make this difficult decision. I recognize the challenges mid-year transitions create for students and staff, and I am committed to minimizing disruption as much as possible.

I have greatly appreciated my time at [School Name] and the opportunity to work with wonderful students and supportive colleagues. The experience I gained here has been invaluable to my professional development.

To ensure the smoothest possible transition, I am prepared to:
- Create detailed lesson plans and materials for my replacement
- Organize all student records and assessment data
- Meet with the incoming teacher to discuss classroom routines and individual student needs
- Remain available for questions during the transition period

I am providing [number] weeks notice as required by my contract and am committed to maintaining high standards of instruction through my final day.

Thank you for your understanding during this transition. I wish you and the [School Name] community all the best.

Sincerely,

[Your Signature]
[Your Typed Name]