You may want to look at Maid-chans anime reviews!

But it is really hard to have a comedy in school without at least a bit harem ;)

Maid-chan is going to review Demi-chan wa kataritai next, that one may interest you (but it is very slightly harem-ish).

Nichijou was original a gag manga and the anime is not bad either, Maid-chan thinks. (https://en.wikipedia.org/wiki/Nichijou) Not much sense in there though!

Toradora - comedic love triangle(s) with the tsundere-Queen
https://en.wikipedia.org/wiki/Toradora!

And of course there is the Sakurasou, if you by any mind-bending accident don't know it, here is the review: https://steemit.com/anime/@maid-chan/maid-chan-no-anime-sakurasou-no-petto-na-kanojo-the-pet-girl-of-sakurasou