Consider that there are 500 students in your school.
No. of pages needed for each student (circulars, fee receipts, date-sheets, timetables, etc.) = 40 (minimum)
Total Pages = (500*40) = 20,000
Ream of sheets needed = (20,000 / 500) = 40
Cost (considering 1 Ream costs around ₹200 in wholesale) = (40*200) = ₹8,000/-
Cost of attendance registers for each class = ₹1,000/- (minimum)
So, you not only help in saving our mother planet Earth by saving atl east 40 Reams of papers and a lot of registers, you also save around ₹8,000-₹10,000 as well.