Have the addresses, school contacts, and their phone numbers. The Day Arrives. Be sure to give yourself plenty of time. Arrive early, if possible. Try to get a feel for the school beforehand.
Most students care little about adult fashion.
Being overdressed, especially if you expect to roll up your sleeves and get down to business, can be a real deterent. Dress comfortably but dress neatly. Be sure the principal knows your name and when you are to arrive. The principal may be able to assist you with getting what you need for your presentation more easily than a teacher. When you arrive, go to the office, introduce yourself.