Well first off...what is the class that you wish your school had? Then all you have to have for your introduction paragraph is a hook, background information, and then your thesis stating why you believing having that class is important. Your paragraph would have to be about 5+ sentences or that’s what I recommend at least! Hope this helped!
Lots of people refer to cold as a personality like ruthless or mean so mint is just another way of saying something like her life was icy cold or she gave me the cold shoulder.