Firstly, both dramas are presenting school life from the students' perspective. They make it in a comedy-driven way, but they are also serious and deep in some depicted situations. Especially, when you consider the problems of acceptance by other classmates. That's why, there are some motives of bullying in both of them, more visible in "Nobuta wo produce".

Futhermore, dramas are very similar when you think about the main characters and their influence on the story. In "Nobuta wo produce" you obviously see the friendship of three protagonists (Kiritani Shuji, Kusano Akira and Kotani Nobuko) and in my opinion "The Queen's Classroom" shares this pattern (Kanda Kazumi, Manabe Yusuke and Shindo Hikaru). The story revolves around their forming friendship and making memories from school.

Finally, episodes in both dramas are construced in the same scheme, IDEA => PROBLEM => SOLUTION. So there are specific subjects which the stories are devoted to, but every episode is a stand-alone story strongly connected to the main plot.