|Osborne High School|
2451 Favor Road Southwest
|School district||Cobb County School District|
|Teaching staff||122.70 (on a FTE basis)|
|Student to teacher ratio||17.27|
|Rival||Campbell High School|
Robert L. Osborne High School is a public high school located north of Atlanta in Marietta, Georgia, United States. It is the oldest high school in Cobb County. It has about 2,090 students. The school mascot is the cardinal, and the school colors are red and white.
Established as Olive Springs Consolidated School in 1884, the building consisted of a single room serving grades one through eight. In 1892 the school became part of the Cobb County School System and was housed in the Olive Springs Baptist Church, little is known about the history of the community school until 1919.
As a member of a faculty of only three, Robert L. Osborne became the principal of Olive Springs Community School in 1919. Over the next nine years, Osborne worked tirelessly to serve a growing population. In 1928, the school moved from its original location at Olive Springs Baptist Church to Joyner Avenue. As the new school opened on September 10, 1928, it employed ten teachers and served 350 students in grades one through nine. In 1936, recognizing and honoring Osborne's commitment to the community, Olive Springs School was renamed Robert L. Osborne School.
In 1938, R. L. Osborne became a fully accredited senior high school. Its first graduating class in 1939 boasted 25 members, 13 boys and 12 girls. As the school moved to its present location on Favor Road in 1962, Mr. Osborne retired.
A new school is being constructed for 2020 opening. Located at the same Favor Road location will also house the Cobb Innovative Technical Academy.
The demographic breakdown of the 1,984 students enrolled for 2013-14 was:
83.2% of the students were eligible for free or reduced lunch.
The following sports are offered: