In 1990, Nancie Atwell founded the Center for Teaching and Learning, a non-profit demonstration school created for the purpose of developing and disseminating effective classroom practices. The faculty conduct seminars, write professional books and articles, and invite teachers from across the US and other countries to spend a week at the school to experience its methods firsthand. CTL also makes a concerted effort to expose its rural Maine pupils to other cultures and ethnicities, so that they have a chance of becoming global citizens. So far, 97% of CTL graduates have matriculated to university.