Unlike related gag manga stories with JK girls doing stupid shit like Nichijou, Plastic Nee-san and Asobi Asobase, this one is a bit different.
It's strange, and even interesting, that all the characters have the same prominence as the MC; the entire cast shines. The author tries to give each character their own "style," but not just by giving them a personality and leaving it there until the moment comes to exploit it with a joke. Instead, he explores each character more deeply, giving them a backstory, an explanation for why they behave the way they do, and how this helps the manga avoid being boring or bland, both in the comedic aspects and in the story's development. That's very rare to see in a gag manga.
At first, I thought the manga was entirely Yuri based on the categories in the description, but to my surprise, it encompasses many styles, partly due to the characters. It can be childish (Loli), satirize society (Waseda), be absurd (Robo), depict romance (Ota), and even be homosexual, specifically Yuri (Lily and Majime), simply vulgar (Baka) or just stupid (Baka and Yamai). There are even chapters that can touch your heart, like the ones dedicated to Loli's grandmother, the Hime flashback and the Kujou sisters (Majo).
It's a special manga, similar to those already mentioned, but it's authentic in its own way; it's well-crafted and makes excellent use of the material the mangaka has available.