The manufacturer weighs a ream of 500 sheets of paper in its uncut state and gives it a number to indicate the paper’s weight. Weight indicates the quality (and usually the price) of the paper.
90 pound paper is a student grade and is rather thin. It buckles when wet and can’t endure much scrubbing for changes.
140 Pound paper is probably the most popular choice. It’s fairly stout, can be stretched to avoid buckling when wet, dries quickly, and is medium-priced.
300 Pound paper is like a board. It doesn’t require stretching, costs twice what 140-pound paper costs, and takes longer to dry.
do I need to go to college?
You should get an education and learn your foundations. College and the alternative can offer great opportunities, but its entirely up to you to control your education.