Citrus Belt League (C.B.L.) is a high school sports league in the Inland Empire region within the Greater Los Angeles area of California's CIF Southern Section. The Citrus Belt League was one of the first leagues in 1913 when the California Interscholastic Federation (CIF) was established under a different name. The league dates back to the 1890s, with founding members Chaffey High School of Ontario, Redlands High School, Riverside High School (now known as Riverside Poly) and San Bernardino High School. It was the only Division I league in the San Bernardino-Riverside County area since its inception, until 2006, when CIF Southern Section releagued it to Division II. The league also organizes an Academic Decathlon competition.