Step 1: Purpose of writing.
I, on behalf of all the students of our school, respectfully request you to allow us to use the library for one hour after school hours.
Step 2: Justification.
Many students wish to read extra books, prepare for competitive exams, and improve their knowledge. However, due to limited library hours during school time, we are unable to use this facility properly. If allowed after school, more students will benefit.
Step 3: Closing statement.
We assure you that we will maintain discipline and follow all library rules. Kindly grant us this permission.
Yours faithfully,
Students of XYZ School.