John A. Rowland High School is a public, four-year high school and International Baccalaureate (IB) World School in the city of Rowland Heights, California, United States.

Rowland High School received a six-year WASC accreditation in 2007[2] as well as being named a California Distinguished School[3] in 1996 and 2004, and a National Blue Ribbon School[2] in 1998.

[4] The school entered a period of building and renovating; the initial conceptual designs were presented in 2013, and the process of modernization started in 2017.

Renovations planned for the high school included additional new buildings, such as a two-story classroom building, a two-story building that replaced the previous administration and library buildings, a multipurpose room, and a new performing arts center, among other upgrades.

Rowland participates in the Hacienda League of the CIF Southern Section.