i've read of some disadvantages and advantages (the two main ones i heard were like spending less time worrying about what to wear + decreased bullying on account of like different socioeconomic classes because everyone is forced to wear the same stuff -- but i guess the latter could be argued as not applicable because people will find some way to bully others anyway). Idk though! i didnt have to wear a uniform (well i did when i was super young but not when i was a teen)
