A Ligonier public high school has been in existence since 1886. The current high school was built on the present site in Ligonier Township, near U.S. Route 30. The Alvin P. Carey Memorial Building opened in 1964. In 1966, under state law, Laurel Valley and Ligonier Valley School Districts merged, creating the Ligonier Valley School District. At this time, in 1966, the schools colors, green and white, and blue and white, were changed to the current colors, red and black. At the start of the 2010-11 school term, students from the former Laurel Valley High School attendance area attend Ligonier Valley, and at that time, the mascot was changed to the Rams, reflecting Laurel Valley's mascot, from the former Ligonier Valley's mascot the Mountaineer.
Amenities
The Alvin P. Carey building has air conditioning throughout the school. The auditorium which was added on in 1998, has a full stage, sound room, light control room, and dressing rooms. Seating over 500, it is used for many public events. The cafeteria has a courtyard that is surrounded on all sides which is used for outdoors studies and other events. The school also features a full size auxiliary gym and weight lifting room.
Athletic fields/courts
The gymnasium has a full sized High School basketball court, two scoreboards, and seats over 600 people. The gym is used for baseball batting cages, basketball, volleyball, and training. The school features one baseball diamond in the front of the school. This newly built diamond features wireless scoring technology, dugouts built in April 2013, and fresh surface.
Standard Bank Stadium, home to Weller Field and the Patrick Podlucky memorial track, is used by track and field, football, and soccer. Standard Bank Stadium, which features a football field that converts into soccer, an eight-lane, tar surface, running track which is on the perimeter of the field, is the only stadium the school owns that is in use. The stadium features the largest stadium design in the Heritage Conference, a 20 yard long logo that stretches from the 40 yard line to the 40 yard line. The stadium seats approximately 2,000 and with standing room holds approximately 5,000. Portable bleachers can be brought in for excess seating. Standard Bank Stadium is often used for public events like Relay For Life, graduation, and more.
Athletic teams
Ligonier Valley participates in the PIAA District 6 Conference. The Rams athletics are supported by the student section, The Herd.