Are you suggesting this is taught as an alternative lens on the American Civil War? I've never heard this name, and went to public school in the South.
I don't see the previous comment making the note around schooling in particular, but rather that what names people use to describe things kind of tell which sides they want you to see as the good one. It's likely that many people who see themselves as "the good people" while being on the side of the confederate would use that naming instead of calling it a "civil war"
See also: "USA bringing democracy to countries that don't have it" VS "USA invading countries to steer their internal/international policies"
The South is by no means a monolith. I don't expect schools in, say, Atlanta, Richmond, and Fayetteville to be teaching the same things. In fact, schools in NYC and Nassau County often don't teach the same things despite being in the same metro area, due to how highly balkanized school districts are.
So it seems like that particular term has fallen out of favor (coming into prominence and usage during the last breaths of segregation) but there are still alternate names like "War Between the States". https://en.wikipedia.org/wiki/Names_of_the_American_Civil_Wa...
See also: "USA bringing democracy to countries that don't have it" VS "USA invading countries to steer their internal/international policies"