His thirty-six years of service between the two houses made him the seventh-longest serving member in the history of the California State Legislature.

[1] Greene sponsored many bills and measures in education during his 36 year legislative career, such as the Leroy F. Greene School Facilities Act of 1998 which requires the State Allocation Board to certify funding for modernization and construction of school facilities.

[2][3] Other bills introduced by Greene related to consumer food stuffs, earthquake proof building codes and the legalization of Bingo in California.

Greene also introduced a bill requiring newborns to be tested for PKU, a brain destroying disorder that can be controlled.

Upon his departure, he also became an education consultant and served on the California Medical Assistance Commission.