Freehold High School, sometimes called Freehold Boro, Freehold Borough High School or Boro to distinguish it from Freehold Township High School, is a four-year public high school serving students in ninth through twelfth grades, located within Freehold Borough, in the U.S. state of New Jersey, operating as one of the six secondary schools of the Freehold Regional High School District. Established in 1923, the school serves students from all of Freehold Borough and from portions of Freehold Township. Freehold High School is the home of the Medical Sciences Learning Center, the Computer Science Academy and the Culinary Arts/Hospitality Management Academy. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1928; its current accreditation extends to July 2025.

As of the 2024–25 school year, the school had an enrollment of 1,376 students and 97.3 classroom teachers (on an FTE basis), for a student–teacher ratio of 14.1:1. There were 516 students (37.5% of enrollment) eligible for free lunch and 46 (3.3% of students) eligible for reduced-cost lunch.

Freehold High School was originally located on the corner of Hudson and Bennett Street in Freehold Borough. At the time it was called the Hudson Street School. It has been at its present location, Robertsville Road and Broadway since 1925. The school is the oldest in the Freehold Regional High School District, having been the original facility that drew students from several Western Monmouth County communities.

Freehold High School, as such, came into being as a result of a referendum vote on October 6, 1953, in which seven districts united to form the Freehold Regional High School District. The referendum allocated $690,000 (equivalent to $8.3 million in 2025) to be used to purchase Freehold High School by the regional district from the Freehold Borough Board of Education.

Freehold Township High School and Manalapan High School, the district's fourth and fifth facilities, were opened in September 1971. Freehold High School was closed for a $300,000 renovation project (equivalent to $2.4 million in 2025) during the 1971-72 school year, during which it operated with 1,600 students using the new building that had been completed for Freehold Township High School.

Freehold High School is by far the most ethnically diverse school in the district. The school has had to face significant Increases in enrollment, going from 941 in 2000–2001 to 1,581 during 2012–2013 school year, a 68% increase. (Statistics as of 2012–2013 school year)

On January 10, 2007, three Freehold High School students were killed in a car accident on Kozloski Road. James Warnock and Michael Dragonetti, both seniors, and Andrew Lundy, a junior, were driving home from school when they hit a van going in the opposite direction. Freehold Boro students held a memorial service for their classmates and gathered at the scene of the accident for days afterwards. The driver of the van, Ruth MacArthur, was killed on impact; the van's only passenger survived.

In May 2007, Newsweek ranked the school 47th-highest in New Jersey.