Lamar High School is the public high school in Lamar, Missouri, USA. It is part of the Lamar R-I School District which has 4 buildings the East Primary School (Pre-k - 2nd), West Elementary School (3rd - 5th), Lamar Middle School (6th-8th), and Lamar High School (9th - 12th).

Lamar High School Partners with Missouri Southern State University for all AP and Dual Credit courses in the school. Along with being connected to the Lamar Vocational and Technical School which teaches Carpentry, Auto mechanic, Nursing, Wood work and drafting, and Digital Design.

The Lamar High School Athletic Department was founded in 1905 and plays in the Big 8 Conference. The teams' nickname is the Tigers for both male and female sports. Lamar competes in the MSHSAA Class 1 for tennis, Class 2 for football and cross country, and Class 3 in baseball, basketball, and track and field. Since 1933 the Lamar Tigers would face the Nevada Tigers for the Battle of the Silver Tiger, a silver coated statue of a tiger that would go to the winning school for the year^[3]. The school's football field is named Thomas M. O'Sullivan Stadium and the baseball field is named Shoff Field. Lamar has a total of 14 Team State Championships, 7 Second Place, 3 Third Place, and 6 Fourth Place.

STATE CHAMPIONSHIPS (CLASS)^[4]

Lamar High School also has several activates such as 4H, Scholar Bowl, Speech and Debate, Chess, Bass Fishing, Archery, Marching Band, Concert Band, Show Choir, and Theater

• Vice Admiral Charles A. Lockwood^[5]
• Rear Admiral Freeland A Daubin^[5]
• Mike Kelley (politician)