Complaint Letter To School

Dear [Principal],

I'm writing this letter to complaint about [some issue]. I've already had a number of verbal correspondences with the [co-director], but the issue remains unresolved. While I do appreciate the efforts you are putting to maintain an optimal environment for the students, I strongly believe that this matter is no less important.

[Go into details here. Explain the problem and suggest a satisfactory solution]

I'm confident that you will agree with me that the current situation is not acceptable and kindly ask you to address this problem by taking the necessary actions for the sake of all our children.

Thank you for your understanding and your time.

Best Regards