Class of 5-2 (not the official English name) is a comedy based on the elementary school life. What interest me the most is the change in facial expression, this style reminds me of Cromartie High. The episodes are broken up into sub episodes, which is in a similar style as what Azumanga Daioh used. Each sub episode tells a short story, which sometimes might relate back to another sub episode. The series is focused mainly on the students of class 5-2, and rarely do you see any other adult characters around.
If you've enjoyed watching or reading Azumanga Daioh, then I'm sure you'll enjoy watching Kyou no Go no Ni.