The 'education' tag was today used on this question. I had never seen it before.
As this example shows, the tag is clearly used to annotate questions whose purpose is to educate the questioner on programming techniques. This means it's either useless (because every SO question serves that purpose in one way or another), or it is misused as a replacement for the 'homework' tag, which has been deprecated for good reasons.
I suggest that we publicly discourage any use of the 'education' tag and deprecate it in the same way as we did the 'homework' tag, possibly before it starts being used as widely as 'homework' was.
If somebody does see a good reason to keep this tag, e.g. to mark questions about education-related programming tools, then this restricted use must be described very clearly in the tag info.
education
tag. Care to pitch in here in case there's something else we should be aware of? (I'm not sure whether this notification will even work though...)