Proposal letter should be very clear and the reader should get convince with your ideas. Keep the tone courteous and respectful and hoping for a positive reply. Explain the pros and cons of the proposal.
Dear Sir,
My name is _________ and I am studying in class ____________. This is to inform you that we were discussing of opening a small store inside the school premises as its very difficult to go out from outside during school hours.
We discussed this with our class teacher______________.we have lot of ideas for starting a store and we have students that is ready to volunteer for the store. It would be a good idea to open a store inside as the student will get stuff cheaper and will be convenient for then and the school can make some money which can be utilized for the annual day program.
Every one of us is very excited about this idea. We would request you to please allow us open this store as soon as possible. We would like o meet you in person and discuss bout this. Thank you for your time and consideration.
Looking forward to your positive reply.
Sincerely,
Your Name