Assabet Valley Regional Technical High School’s community education program is holding registration for its spring session of night courses. Known as Assabet After Dark, the program offer classes on a wide range of topics, including sushi preparation, clothing alteration, and financial investing. The program has a new director, Carolyn Madzar, who was the lead teacher of computer programming and website development at the regional school, 215 Fitchburg St. in Marlborough. For more information and to register for courses, visit its website, www.assabetafterdark.com. Full story for BostonGlobe.com subscribers.