Trenton Central High School is a four-year comprehensive public high school that serves students in ninth through twelfth grades from Trenton, in Mercer County, New Jersey, United States, operating as part of the Trenton Public Schools. As of the 2013-14 school year, the school had an enrollment of 1,821 students and 178.0 classroom teachers (on an FTE basis), for a student–teacher ratio of 10.2:1. There were 1,428 students (78.4% of enrollment) eligible for free lunch and 112 (6.2% of students) eligible for reduced-cost lunch.