A New Milford school principal has stepped down to take a position in another district.  The Board of Education met this week to appoint an interim leader for Schaghticoke Middle School to replace Chris Longo.  He served for 5 years and will be replaced, on an interim basis, by Robert Tremaglio. Tremaglio is a former principal of Trumbull High School and Bunnell High School in Stratford.