Good for you for requesting a private lesson. This will be very valuable – to the school and to you. This is your chance to see if this individual is someone you can work well with and learn from over the course of 4 years of college. So be prepared with questions you can’t find answers to on the school’s website. Obviously, you want to be ready to answer questions yourself and show your best work. But do everything you can to be yourself – schools look for that. They can sniff out someone who’s faking it from a mile away. Be as courteous and professional as you know how to be, and be sure to address the department chair by their title (Dr.? Mr.?) and last name (or Professor ______). Follow your visit up with a thank you email or note. If you can’t get a tour with this person, see if you can get one with someone else. See if you can also sit in on some classes and hang out in the cafeteria to get a feel for how students relate.