Write an email to the principal of my son(Sam)'s school, asking for information about the uniform changes. Be firm with the wording, but polite. 
Write an email to the principal of my son(Sam)'s school, asking for information about the uniform changes. Be firm with the wording, but polite. 
user
Esteemed Mr. Principal, 

This is USER, Sam's mom. I'm writing with concern and clarification about the uniform policy. Can you please describe the changes, and why they are being made? I am familiar with the current uniform requirements up until this point. I am seeking an understanding of why the new changes are in effect. Thank you for your attention to this matter. 

Sincerely, 
USER
assistant