[Computer Science](https://cs.stackexchange.com/) tried a [tag:homework] tag, [we debated it several times on our meta](https://cs.meta.stackexchange.com/questions/tagged/homework), we found that [people can't even agree on what the tag is supposed to mean](https://cs.meta.stackexchange.com/questions/313/what-should-the-homework-tag-mean), and we ended up [getting rid of it through a vote](https://cs.meta.stackexchange.com/questions/468/homework-policy). The only effect I've seen from getting rid of the tag is that it's cut down on the number of arguments about adding it to a question. In other words, all the [tag:homework] tag did was to generate arguments about its use. Good riddance.

Let me emphasise a point here: **even the supporters of the [tag:homework] tag do not agree on what the tag means**. We have a tag that means different things to different people, generates a lot of argument, and does not categorize questions (it is perfectly possible to have two identical questions, except that one has the [tag:homework] tag and the other doesn't; depending on what [tag:homework] means, they may or may not be duplicates). So the [tag:homework] tag is **both useless and harmful**.

Even [Mathematics](https://math.stackexchange.com/)'s homework policy is far from consensual. In an [old discussion](https://math.meta.stackexchange.com/questions/1652/what-do-we-do-with-users-who-post-numerous-unlabeled-homework-questions) on the topic, the [most upvoted answer by far](https://math.meta.stackexchange.com/questions/1652/what-do-we-do-with-users-who-post-numerous-unlabeled-homework-questions/1661#1661), by Professor [JDH](https://math.meta.stackexchange.com/users/413/jdh), reacts against the opprobrium against homework questions:

> Finally, let me say that the policy of encouraging weasily half-answers to questions that have been deemed to be homework, consisting of obscure hints only, amounts to an annoying policy of encouraging bad answers here at math.SE, and I am completely opposed to it. For this reason, I think we should abandon or ignore the homework tag.

In a [more recent thread](https://math.meta.stackexchange.com/questions/4154/a-consolidated-homework-policy), the [top](https://math.meta.stackexchange.com/a/4160) [two](https://math.meta.stackexchange.com/a/4156) answers express opposition to treating homework questions specially. If homework questions aren't treated specially, there's no need for a tag in the first place.