The Philadelphia Public School District moved to a successful or "C" performance classification while the Neshoba County Public School District advanced to a high performing or "B" classification, accountability results for the 2012-13 school year released today by the state Department of Education showed.

The Union Public School District advanced to a "Star" classification or A.

The accountability model measures student performance on rigorous curricula and assessments.  Schools and districts received performance classification letter grades of "A," "B," "C," "D" and "F."