The following sentence is an example of a sentence that contains a list that is punctuated correctly:
I have a list of things to do today that includes: wake up, eat breakfast, brush my teeth, and go to school.
If a sentence contains a list, the items in the list should be separated by commas. In the example sentence above, all of the items in the list are separated by commas except for the last one, which is separated by the word “and.”