CHESTERTONArt classes: Artist and educator Marsha Demkovich will teach art classes for children from preschool age through 16 years old at the Chesterton Art Center, 115 S. 4th St.Class sessions run monthly, Sept. 7 through May 26, and follow the Duneland School Corp. calendar.Classes met weekly, and include all ages and skill levels. The tuition fee is $55 per month for preschool students, and …