All of my T1, T2, CCR2 and Documentation Diver classes revolved around wrecks.
From what I can see, if there are wrecks reasonably close by, GUE instructors prefer to do experience dives on technical classes on wrecks. So while GUE doesn't have a "wreckdiving class" specifically, wrecks are an integral part of most technical classes, and diving wrecks will be taught whilst diving them.
From what I can see, if there are wrecks reasonably close by, GUE instructors prefer to do experience dives on technical classes on wrecks. So while GUE doesn't have a "wreckdiving class" specifically, wrecks are an integral part of most technical classes, and diving wrecks will be taught whilst diving them.