After numerous fits and starts, the station first signed on the air on April 1, 1957. It was the 12th educational television station to sign on in the United States and the second in Louisiana as well as New Orleans' third television station (behind WDSU and WVUE, but before WWL-TV and WGNO). The state's first educational station, KLSE signed on a month earlier from Monroe, but went off the air in 1964, making WYES the oldest continuously operating educational station in Louisiana. After KLSE shut down, WYES would be the only educational station in the state until LPB flagship WLPB-TV in Baton Rouge signed on in September 1975. It originally operated as a member of National Educational Television (NET); the station joined the Public Broadcasting Service (PBS), when NET was reorganized in 1970.