You cannot take the examination because of the marriage of your elder sister. Write an application to your Principal to exempt you from the examination.
Answers
Dear respected
Principal sir.......,
On... /... /19 I cannot come to school because my elder sister married program is their that is why I can't come to school on that day their is also exam..,so sorry sir I can't come to school on this day
You student
......... ..............
"16.07.2019
From
XXX,
XII Standard,
YYY School.
To
The Principal,
YYY School.
Sub: Requesting exemption from Quarterly Examinations
Respected Sir/Madam,
My name is XXX and I am a XII standard student enrolled in your school.
As my elder sister is getting married at my hometown between August 6th to 9th 2019, I will not be able to attend the Quarterly examinations.
So, I request you to kindly exempt me from the examinations and grant me permission to go to my hometown for the wedding.
Thanking you.
Yours Truly,
XXX"