One of the interesting things to consider with all of these school uniforms is how we got into this position in the first place. According to the Tags tab, the earliest individual school uniform tags in that format were made in March 2014 by mock, encompassing the earliest-tagged Inazuma Eleven school uniforms and the Mitakihara School Uniform from Madoka Magica. After that, tags were made infrequently, until March 2017, when BrokenEagle made the school uniform tags for Girls und Panzer. That's when we see our first actual boom of school uniform tags, following in GuP's example.
It's interesting to note how it would be slightly over a year later after this, in topic #15769, when BE would propose the idea of having school uniform auto-imply tags ending with *_school_uniform
in response to someone making a manual BUR for such. That would then be implemented in December 2018, and one could make the argument that the boom this caused in school uniform tags is equal to, if not greater than, that of the GuP school uniform tags (as well as prompted proposals to expand it to include synonyms such as *_academy_uniform
[topic #21288, topic #17949], which generally just led to them getting updated to follow the existing format [topic #18266]).
And from then on, its intended use for distinguishing many school uniforms worn by many characters in one copyright (ex. Inazuma and GuP) or particularly unique school uniforms in a copyright with many designs for the many characters wearing said uniform (ex. OG!MadoMagi) was diluted beyond hell to the point we're at now, where school uniforms are made just for the sake of it, and whether or not they're properly tagged is highly dependent on copyright. Something like Tokyo-3's uniform goes severely undertagged, but then you look at other more-contemporaneously popular copyrights and their uniform tags are far more thoroughly tagged.
Now personally, I don't think it should be nuked outright, since it is still a fairly unique-looking school uniform relative to other more egregious cases... though specifically referring here to the female uniform. Part of the reason why I think these school uniform tags exist, specifically focusing on examples like Eva and MadoMagi before it got other uniforms, is to serve as alternatives to specific cosplay tags, because something like Ayanami Rei (cosplay) or Kaname Madoka (cosplay) would likely be dominated by their respective unique outfits (plugsuit and magical girl outfit) as opposed to their school uniforms, so in theory you could funnel ambiguous Eva/MadoMagi school uniform cosplay to the uniform tags, and if it their actual unique outfits, then you can use the proper cosplay tags. In practice however, that's probably not how anyone imagined these. They just likely thought "oo, relatively unique looking school uniform time to make a tag", or "oh, two characters from different copyrights are wearing each other's school uniforms, i need to make specific tags for disambiguation purposes" (ex. post #1416484).
Regardless from all that though, we should probably consider whether or not we should start separating out male and female school uniforms for tagging purposes, since I imagine for quite a few school uniform tags that'd otherwise get canned, that'd be the thing that'd make them actually useful.