Dear Principal and Athletic Director: Please consider giving permission (via a letter) for the students at your school in join with our newly-formed, varsity water polo team. We wish to extend our water polo opportunity to students at your school who might be interested. We are seeking a simple, open letter from the school principal to the PIAA that says: To All It May Concern: Students at your school are permitted to join a sports cooperative (coop) for the sport of Water Polo at Pittsburgh Obama. Sincerely yours, You can send that letter to me via email and postal mail: