Scheme wasn't shelved because it was a "fringe" language. In fact, Prof. Hilfinger the one who brought it to Berkeley in 1980, and that class 61A is the first course all CS majors take. Brian Harvey taught the class for ever, and published his own textbook "Simply Scheme."
MIT is doing something similar, with the support of the authors.
The same material is being taught, just in a different language.
MIT is not doing something similar; they are teaching different material in Python, following a different book. This is unpopular with the very best students, but even so only the ones who have ever heard of Scheme and SICP. But the introductory computer science course teaches state machines, a bit of recursion, and also a bit of circuits and the like. Nothing nearly as cool as writing your own compiler, however.
MIT is doing something similar, with the support of the authors.
The same material is being taught, just in a different language.