Old Bridge High School

Old Bridge High School (formed from combining the former Cedar Ridge and Madison Central high schools) is a four-year comprehensive public high school that serves students in ninth through twelfth grades from Old Bridge Township in Middlesex County, in the U.S. state of New Jersey, operating as the lone secondary school of the Old Bridge Township Public Schools. The school is located on County Route 516 in Old Bridge Township, however, it is assigned a Matawan mailing address. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1970; the school is accredited until January 2032.

Through partnerships with Fairleigh Dickinson University and Middlesex County College, students can take college courses for credit in both high school and college.

As of the 2023–24 school year, the school had an enrollment of 2,637 students and 195.8 classroom teachers (on an FTE basis), for a student–teacher ratio of 13.5:1. There were 409 students (15.5% of enrollment) eligible for free lunch and 146 (5.5% of students) eligible for reduced-cost lunch. Based on 2021-22 data from the New Jersey Department of Education, it was the fifth-largest high school in the state and one of 29 schools with more than 2,000 students.

The school operates from 7:35 A.M. to 2:00 P.M. and runs on a 6-period schedule using block scheduling. With seniors having the privilege to register for late arrival or early release from either block schedule.

Old Bridge High School opened in September 1994. It was formed from the merger of Cedar Ridge High School and Madison Central High School, which were the two existing public high schools in Old Bridge Township. By the 1980s, the enrollment in the two predecessor schools had been little more than half the combined peak of 4,000 that had been reached in the 1970s. The district estimated that the combination of the two schools into a single facility would save $600,000 per year (equivalent to $800,000 in 2024) after up-front costs of the merger estimated at $400,000. OBHS was originally set up as a two campus system having an East Campus at the former Cedar Ridge site containing Grades 9 and 10 and a West Campus at the former Madison Central site containing Grades 11 and 12. The entire high school is now located at the former Cedar Ridge High School (East Campus) and Carl Sandburg Middle School Building after an addition was added in 2004. The former Middle School building houses the Grade Nine Center.

Dr. James Hickey was hired in 2003 and he oversaw a $26.8 million high school construction project that was completed in September 2005. The school developed a stricter but better learning environment as shown through student achievement and standardized test scores which have exceeded state standards. Out-of-school suspensions dropped more than 55% and student tardiness dropped by more than 60%, while scores on state exams rose more than 20% in mathematics and more than 10% in language arts literacy. For his work in transforming Old Bridge High School, Dr. Hickey was recognized as the New Jersey Principal of the Year in 2009. He was also recognized by the New Jersey State Board of Education. The district Superintendent of Schools also publicly recognized Dr. Hickey for his work in transforming OBHS.

In 2010, Old Bridge High School became part of the Confucius Classroom following the implementation of a comprehensive Chinese program at the high school. Delegations from the school went to China in 2009 and 2010.

In 2011 according to the New Jersey School Report Card, Old Bridge High School made Adequate Yearly Progress (AYP) under the No Child Left Behind Act by meeting 40 out of 40 indicators, a first for Old Bridge High School.^{[citation needed]}