How to write a leave letter for fever to class teacher in English

The Teacher
H.I.M. Hr. Sec. School
Khandari, Agra

Subject: Application for one day leave due to fever.

Sir,

With due respect, I want to say that I am suffering from high fever since last evening. My father has called the doctor for treatment. Hence I will not be able to attend classes today.

Kindly grant me leave for one day. I would be very thankful for your consideration.

Yours faithfully
Harsha Sharma
Class 11th A
09 May 2023