Originally Posted by Wondergirl
Is this a comic strip of maybe four frames per strip? Is this a one-frame cartoon with, like, one a week? Is this a comic book?
If it's a strip, first decide on characters. You will want your characters to interact. The next paragraph tells about strips in which everyday people interact in very funny ways.
I suggest you read the Peanuts, Baby Blues, and For Better or For Worse comic strips. Larson humanized animals and made them say funny things in funny situation. The last three are "slice of life" cartoon strips that take the most miniscule happenings in a person's day and turn them into an entire adventure. And speaking of daily adventures, you will share them aplenty in the Calvin and Hobbes strips, now defunct but also available in book form.
Finally, I suggest you read Gary Larson's Far Side cartoons. They are available in a number of books. Your public library will own them or get them for you through interlibrary loan.
Of course you don't want to copy their ideas, but you will get a sense of how very small incidents in an ordinary person's life can turn into humor for readers. I'm sure a student has many, many adventures during the day that could be expressed comically. Make a list of them. Think of a student's growling stomach during a morning math test. Think of 3rd grade boys avidly studying the encyclopedia volumes at the back of the schoolroom but what they are really doing is looking at the naked ladies in the art section.
In college, my son was the cartoonist for the student newspaper for a couple of years. His hero was Sausage-Hed (body was a fork and head was a sausage) who was a dragon-slayer during medieval times. SH (cholesterol-filled) had an archenemy who was in the shape of a spear of broccoli (healthful food). Thus, my son had food jokes going along with king/castle/army etc. jokes. The cartoon strip acquired a life of its own as it matured.