Write an e-mail to the principal of your school requesting her to grant you 7 days outstation leave as you need to attend a family function.
hello aanya,
this depends upon your creativity about how to write.but i can still tell some hints
1. write to the point
2.start and end properly
3.try to recheck 2 times for any grammitical mistakes
4.make sure you follow the format properly
5.if any problems come in between tryasking on meritnation
6.ALL THE BEST
cheers!