If you're looking for anime similar to Sayonara Zetsubou Sensei, you might like these titles. All recommendations are made by Anime-Planet users like you!
Fumizuki Academy is divided into classes ranked based purely on ability; Class A has laptops, reclining seats and ultimate comfort whereas Class F has to settle for a rundown classroom with rotten cushions and rickety coffee tables. Akihisa Yoshii has recently taken the placement exam and finds himself relegated to the lowly Class F along with many of his friends, and they’re far from impressed with their draughty facilities. Luckily, not all is lost as at Fumizuki, classes can declare war on each other to swap rooms by fighting with summoned characters whose strength is based on the users' test scores. As they dream of escaping their decrepit circumstances, the ‘idiotic’ students of Class F will try whatever they can to reach the dizzy heights of Class A’s luxury, even if it means taking on the entire school in an all-out summoning war!
Both of these animes are based in a a crazy pyshco school where the iimprobable happen and contain a similar style of animation. The main character is a wimpy guy and dragged on adventures in both of them that often include swimming trips and random chases across the city. Comedy through and through, both series are incredibly random.
At Cromartie High, it’s tough being a delinquent -- a fact that do-gooder Takashi Kamiyama intimately understands. When he’s not engaging in contests of strength and rival gang wars, Kamiyama can also be found submitting punny jokes and planning his own rise to fame within the delinquents’ ranks, and that’s just the beginning! With friends like robotic Mechazawa, a giant gorilla, a hairy man from the 80s named Freddie and a clan of delinquents with mohawks that flow in the wind, how can anyone not enjoy high school?
Yuno is a high school student who dreams of becoming a famous artist; and after being admitted at Yamabuki High School of Arts, she is one step closer to her dream. Yuno must move to an apartment complex near the school, and there, in Hidamari-so, she meets three new friends: Miyako, a very active person who will do anything to get her hands on something to eat; Hiro, an upperclassman who is obsessed with weight gain; and Sae, the oldest of the bunch and also a tomboy. From wild cosplaying teachers to bizarre school myths, Yuno and friends enjoy fun times and crazy days at Yamabuki High!
Here is a great comparison, these titles were of course made by the same crowd, and it does show both visually and in the telling of the story. Visually, the use of texture, pattern, and character stylization are similar. The use of sounds is also similar, with random sound effects (game-show tones, baseball-bat clangs, etc), or random silence, provided to punctuate jokes or accentuate a character's reaction to something. The main difference is that Hidamari Sketch ends up feeling more relaxed and mellow in its pace, and it intentionally gives the viewer that "warm and fuzzy" feeling when its all over, whereas SZS presents more frenzied vision, that is meant to be a little more unsettling and/or confusing in the end.
This probably seems out of place, but I recommend Oniinokoto if you liked Sayonara Zetsubou Sensei and vice versa, because both feature forms of the same humor, how Oniinokoto is far more perverted you can expect to see random things like Stalker Chains in both of them, this recommendation may not hold out, but hey, give it a shot.
Satoshi Yabe is the newest employee at Kamohashi Elementary School. Wide-eyed and enthusiastic, he’s thrilled to finally be fulfilling his dream of being a teacher – but little did Satoshi know that he’d be assigned to class 6-3, a group that houses none other than the violent and perverted Marui triplets! Between the girls trying to hook him up with the busty school nurse, dealing with the unfortunate consequences of a hamster named 'Titties' and other misadventures, Satoshi’s dream of an uneventful school life has come to an end!