Write a Leave Application for your son to the Headmaster of his School.
The Mall
Mussoorie
May 12, 2002
The Headmaster
New Shine School
Mussoorie
Sir
My son VipinNegi, a student of Class II, has been unable to attend school for the last three days as he was down with high fever. I am attaching a Medical Certificate for your records.
Please grant him leave of absence for these three days.
Thanking you
Yours faithfully
Usha Negi