Manga like Sket Dance

[Charuru]

I'm looking for a manga like sket dance.

I heard that gintama was similar... but maybe in terms of the plots and characters types? but otherwise not at all similar.

Looking for a school / friends manga. I read Haruhi / Yankee-Kun - Megane-Chan, Zippy Ziggy, Angel Densetsu. Which I think are pretty similar.

Pretty sure there are some more in the genre, any recommendations would be awesome.

Thanks.