Hey, since everyone is talking about classes, I figured I'd streamline things a bit for you.
To make things easy, the second years will be in class 2C, with Watanabe sensei. The third years are in class 3B with Koda sensei.
Kaoru Watanabe is generally regarded as the 'normal' teacher of second years. Most second years enjoy her classes, and she's neither too strict nor too stern. Even then, she too has a quirk. Takeshi Koda is a stern teacher, but not without a kind heart. He pushes his students because he wants them to be successful later in life. Like many of the other insructors in persona games, he can be a bit....bizarre.