We have an sat-exam tag. Although it has no tag wiki, it's clearly for questions relating to the SATs. I'm afraid, however, that this doesn't tell us very much about the actual questions, and in several cases it's the only tag on a question.
I think that it's an example of what Jeff Atwood calls a "meta tag":
If the tag can’t work as the only tag on a question, it’s probably a meta-tag.
That seems to apply here. What's more, most of the questions tagged this way aren't particularly high quality. I'm not sure it's a helpful tag to browse through.
Should we get rid of this tag? Or does it serve a purpose?