4 sentences

1. 没想到我们的孩子同班。

   méi xiǎng​dào wǒ​men de hái​zi tóng​bān.

   I didn't know our kids were in the same class.

   Source: OpenSubtitles

2. 他们会跟我同班。

   tā​men huì gēn wǒ tóng​bān.

   They'll be in my class.

   Source: OpenSubtitles

3. 我们两个同班。

   wǒ​men liǎng gè tóng​bān.

   We are both in the same class.

   Source: Tatoeba

4. 也许你应该多多和同班同学交往。

   yě​xǔ nǐ yīng​gāi duō​duō hé tóng​bān tóng​xué jiāo​wǎng.

   Maybe you should socialise a little bit more with your classmates.

   Source: OpenSubtitles