how to write a letter to a principal of a school

I want to write a letter to the principal addressing about the importance of computer education in the present world.so how can I write the letter ?what kind of information I must include?

[Anglika]

You need to decide why you are telling him about the importance of computer education. Then put in the letter what you would say to the headmaster if he was standing in front of you.

Post a draft and someone will comment on it.