How to write an application to your school principal to grant you leave in advance?

To

The Principal

St. Martin School

Location

(Through the class-teacher)

Sir,

With due respect, I beg to say that my father is suffering from fever. So, I cannot go to school for about a week. Therefore, I pray you to be kind enough to grant me leave from 2nd July 8 July and oblige.

Your Obedient Student

Your Name

Class V