Aizawa : Class we're going to have a new student so be nice to them. [After Aizawa explained he went to sleep]

Bakugo: Oh great another extra Tsk. [Bakugo said annoyed]

Midoriya: Kacchan, be nice-

[Bakugo yelled annoyed at Midoriya]

Uraraka: I can't wait to meet them!

Mineta: I hope the new student is hot.

As the rest - Iida, Tsuyu, Yaoyoruzu, Kirishima, Tokoyami, Jiro, Sero Ojiro, Toru, Koda, Sato, Shoji, Aoyama, Mina and Todoroki just stayed silent or talked to their friends.