They're school uniforms just like the *_school_uniform tags are, except they use the word "academy" instead of "school".
Posted under Tags
I think in the past it's been argued against because of military academies and the like. I really don't agree with the argument, though. They're still schools regardless, and "school uniform" is used on such an extremely wide variety of outfits (and the auto-implications causes it to get tagged on even adapted outfits that aren't necessarily school uniforms) that I don't think there's any use being nitpicky with it at this point.
BUR #13490 has been approved by @nonamethanks.
create alias ashford_academy_uniform -> ashford_academy_school_uniform
create alias shuujin_academy_uniform -> shuujin_academy_school_uniform
create alias eden_academy_uniform -> eden_academy_school_uniform
create alias st._chronica_academy_uniform -> st._chronica_academy_school_uniform
create alias lillian_girls'_academy_uniform -> lillian_girls'_academy_school_uniform
create alias starlight_academy_uniform -> starlight_academy_school_uniform
create alias rouman_academy_uniform -> rouman_academy_school_uniform
create alias lydian_academy_uniform -> lydian_academy_school_uniform
create alias hyakkaou_academy_uniform -> hyakkaou_academy_school_uniform
create alias hoshinoumi_academy_uniform -> hoshinoumi_academy_school_uniform
create alias naranja_academy_uniform -> naranja_academy_school_uniform
create alias seishou_academy_uniform -> seishou_academy_school_uniform
create alias miyamasuzaka_girls'_academy_uniform -> miyamasuzaka_girls'_academy_school_uniform
create alias uva_academy_uniform -> uva_academy_school_uniform
create alias saikai_academy_uniform -> saikai_academy_school_uniform
create alias raira_academy_uniform -> raira_academy_school_uniform
create alias fuuka_academy_uniform -> fuuka_academy_school_uniform
create alias l'avenir_academy_uniform -> l'avenir_academy_school_uniform
create alias atlas_academy_uniform -> atlas_academy_school_uniform
create alias ame_no_kisaki_academy_uniform -> ame_no_kisaki_academy_school_uniform
create alias yotsuboshi_academy_uniform -> yotsuboshi_academy_school_uniform
create alias infinite_stratos_academy_uniform -> infinite_stratos_academy_school_uniform
create alias southern_cross_academy_uniform -> southern_cross_academy_school_uniform
create alias kawakami_academy_uniform -> kawakami_academy_school_uniform
create alias mihoshi_academy_uniform -> mihoshi_academy_school_uniform
create alias dream_academy_uniform -> dream_academy_school_uniform
create alias sword_mastery_academy_uniform -> sword_mastery_academy_school_uniform
create alias habataki_academy_uniform -> habataki_academy_school_uniform
create alias seijou_academy_uniform -> seijou_academy_school_uniform
create alias saint_mary's_academy_uniform -> saint_mary's_academy_school_uniform
create alias saotome_academy_uniform -> saotome_academy_school_uniform
create alias seigetsu_academy_uniform -> seigetsu_academy_school_uniform
create alias ototachibana_academy_uniform -> ototachibana_academy_school_uniform
create alias seio_girls'_academy_uniform -> seio_girls'_academy_school_uniform
create alias tennomifune_academy_uniform -> tennomifune_academy_school_uniform
create alias star_harmony_academy_uniform -> star_harmony_academy_school_uniform
create alias osafune_girls_academy_uniform -> osafune_girls_academy_school_uniform
create alias thors_military_academy_uniform -> thors_military_academy_school_uniform
create alias keishin_academy_uniform -> keishin_academy_school_uniform
create alias fumizuki_academy_uniform -> fumizuki_academy_school_uniform
create alias surre_academy_uniform -> surre_academy_school_uniform
create alias world_w_academy_uniform -> world_w_academy_school_uniform
create alias seiyo_academy_uniform -> seiyo_academy_school_uniform
create alias hanegasaki_academy_uniform -> hanegasaki_academy_school_uniform
create alias hakujou_academy_uniform -> hakujou_academy_school_uniform
create alias areishia_academy_uniform -> areishia_academy_school_uniform
create alias arashigaoka_academy_uniform -> arashigaoka_academy_school_uniform
create alias kouryou_academy_uniform -> kouryou_academy_school_uniform
create alias seitetsu_academy_uniform -> seitetsu_academy_school_uniform
create alias cross_academy_uniform -> cross_academy_school_uniform
create alias shuuchikan_academy_uniform -> shuuchikan_academy_school_uniform
create alias seiryou_academy_uniform -> seiryou_academy_school_uniform
create alias hoshinomiya_fuuka_academy_uniform -> hoshinomiya_fuuka_academy_school_uniform
create alias jiyuugasaki_academy_uniform -> jiyuugasaki_academy_school_uniform
create alias seishun_academy_uniform -> seishun_academy_school_uniform
create alias kouryoukan_academy_uniform -> kouryoukan_academy_school_uniform
create alias aoi_academy_uniform -> aoi_academy_school_uniform
create alias himezakura_girls'_academy_uniform -> himezakura_girls'_academy_school_uniform
create alias st._aero_academy_uniform -> st._aero_academy_school_uniform
create alias morimiya_academy_uniform -> morimiya_academy_school_uniform
create alias advanced_magic_academy_uniform -> advanced_magic_academy_school_uniform
create alias akane_academy_uniform -> akane_academy_school_uniform
create alias zashono_academy_uniform -> zashono_academy_school_uniform
create alias yokuryou_academy_uniform -> yokuryou_academy_school_uniform
create alias stella_women's_academy_uniform -> stella_women's_academy_school_uniform
create alias etoile_academy_uniform -> etoile_academy_school_uniform
create alias banzai_academy_uniform -> banzai_academy_school_uniform
create alias uminomori_private_academy_uniform -> uminomori_private_academy_school_uniform
create alias ataraxia_academy_uniform -> ataraxia_academy_school_uniform
create alias mikagura_private_academy_uniform -> mikagura_private_academy_school_uniform
create alias seiei_sakuragaoka_academy_uniform -> seiei_sakuragaoka_academy_school_uniform
create alias kagurazaka_girls'_academy_uniform -> kagurazaka_girls'_academy_school_uniform
create alias himeyuri_girls'_academy_uniform -> himeyuri_girls'_academy_school_uniform
create alias sakurazaka_academy_uniform -> sakurazaka_academy_school_uniform
create alias bell_liberty_academy_uniform -> bell_liberty_academy_school_uniform
create alias bullworth_academy_uniform -> bullworth_academy_school_uniform
create alias seidoukan_academy_uniform -> seidoukan_academy_school_uniform
create alias st._kleio_academy_uniform -> st._kleio_academy_school_uniform
create alias sainomiya_fuuka_academy_uniform -> sainomiya_fuuka_academy_school_uniform
create alias st._ignacio_girls'_academy_uniform -> st._ignacio_girls'_academy_school_uniform
create alias private_ootori_academy_uniform -> private_ootori_academy_school_uniform
Alternatively, here's a manual alias request to "academy school uniform" (following the pattern of shuuchiin academy school uniform, homurahara academy school uniform, etc.).
The bulk update request #13490 (forum #226903) has been approved by @nonamethanks.