Three new principals have joined Woodstock School District 200. Bethany Hall, Ryan Doyle and Art Vallicelli will begin leading in their new positions this school year. Hall will head Northwood Middle School, Doyle will serve as Dean Street Elementary School's new principal, and Art Vallicelli will lead Woodstock High School, according to a news release from the district. Hall has worked in District 200 for the past 20 years.