Respected Sir/Madam,
I would like to inform you that I am _________ (name), working as a teacher in your reputed school. I have been teaching __________ (class) of your school. My employee ID number _________ (employee ID number).
This email is to request you to kindly grant me one day leave for __/__/_____ (date) as I have to ________ (mention reason – visit doctor/ have to attend appointment/ personal reason/ any other) on the said date. It is to request you kindly sanction leave for the said date.
I shall be highly thankful to you for the approval at the earliest.
Thank you,
Sincerely,
__________ (Name),
__________ (Employee ID)