<p>A number of the Art League-type instruction schools will allow 15-year olds into their drawing classes where there are mostly nude models. I second the statement that an art student can never get enough real-life drawing practice. When my now professional artist-daughter was 15, and also independent, she would take an early morning bus to NYC on Sundays. She would take a 3-hour art class at the student art league, and spend the day in NYC. She also took classes at our local art league every summer.</p>