To,

The Principal,
(Your School Name),
(SCHOOL DISTRICT OR ADDRESS).

Subject: Application for Urgent Piece of Work

My name is (Your Name) and I am a student of class (Your Class) at your school. With due esteem it is to be stated that I have an urgent piece of work at home and need a leave in this regard. The nature of urgency is very personal that is why cannot be explained here.

 Therefore, I need leave for two days for my urgent piece of work. I I shall be obliged.

Yours Truly,

Mr. (Your Name),
13th July,  2021