Nashoba Regional High School administrators have embarked on a sometimes controversial debate about the school’s core values, a major element in its upcoming reaccreditation process, reports principal Parry Graham.  In a forum last month, school officials reached a consensus on four major priorities for the school — achievement, communication, relating to one another, and educational engagement. Some school officials expressed competing opinions during the discussion, and one student representative requested that acceptance be a major agenda in the school’s core values, Graham stated.