Copy Writer with Teaching Background -Primary

I have started to compose a letter to head teachers, but need some help with the content as it's just not quite right. Need someone who knows all the key words to use for primary school head teachers in order to get them to take notice of my letter. The letter is offering them a fun and unique way to teach good hygiene to primary aged children in a fun and exciting way using drama. The framework for the letter is already done and I have plenty of literature about my business that can be used if needed. This project should take someone who , good at copy writing no more that 2 and a half hours - if that. I would like the letter by Friday-Sunday - if possible so as to get sent in the post for next week. Please only excellent copy writers and those who can proof their own work should apply.
thank you
Nina