$50 Gift Certificate for Main Line School Night. Main Line School Night, the area's largest adult education program, attracts thousands each term with a choice of over 500 weekday, weeknight and weekend non-credit courses. They offer timely, trendy and familiar courses to keep the mind and body fit in the creative arts, computers, cooking, dance, fitness, hobbies & crafts, home & garden, investing & money management, language, music, sports & games, writing and travel.