How Do I Allow Students to Rate Each Other in the Forums?

After having completed the steps for creating/adding forum/discussion, follow these steps to set the options for the forum type.

Click the drop down menu under "general" and select the option that fits the style of the forum.

(e.g.) The picture to the left is Questions and answers.  

At the bottom of the picture, notice another drop down menu to select the size of file.  The default is the largest size.