The Hillsdale Local School District has found its next superintendent.   Catherine Trevathan was named to the position this week, chosen from a field of 33 candidates.  Trevathan, who’ll replace the retiring Steve Dickerson, has spent the past decade as principal at Little Miami High School, in Morrow County.  Overall, she has more than 15 years of administrative experience.  Trevathan will officially take the reins at Hillsdale this summer.  Her three-year contract begins August 1st.