Lebanon High School is a public high school located at 1700 S 5th St, Lebanon, Oregon, United States. LHS originally opened in 1909 at the site now occupied by the city library, senior center and gazebo in Academy Square. In 1957, the school moved to its current location and the older building became Lebanon Junior High School (later Lebanon Middle School). The older LHS site had hosted a public education institution for more than 150 years beginning in 1851 with the opening of Santiam Academy and ending with the demolition of the Lebanon Middle School building in 2002.