I only really got a school supply list in elementary school. It was just general stuff like number two pencils (no mechanicals), erasable blue-ink pens (for grade five only), colored pencils, a binder, wide-ruled notebook paper, binder pocket dividers, and a box of facial tissues. Calculators were school-owned, construction and manilla paper were usually provided, and we never really needed the rest of the stuff mentioned so far (protractors, compasses, electronic spellcheckers, etc.). We were given a couple days notice before we needed poster board, and we always could count on foam board for science projects.
There really wasn’t a requirement list in junior high and senior high school. By that point, you knew you’d at least need pencils, pens (regular blue or black), colored pencils, paper (wide- or college-ruled), and a binder. A class here and there might want a folder with two pockets and brads, more posterboard for special projects, foam boards for history projects. Calculators by this point were just scientific. On the flip side, we got a requirement list for physical education (buy the PE uniform and put together a small first aid kit for PE). By high school, you had come up with your summer reading book, latex gloves for the biology dissection project, and graphing paper for math and economics. When we needed graphing calculators, each classroom had a set for students who didn’t want to buy their own (put these couldn’t leave the room).
Unfortunately for my parents, I took art in junior high and band from junior high to high school. Those were fun requirements. Art had things like felt tip pens, calligraphy pens, more colored pencils, watercolor pencils, number one and two pencils, artist’s eraser, scissors, glue, paste, sketchpads, more posterboard, required construction paper, graham crackers, eggs, powdered sugar, candy (the last four for the annual gingerbread house project), clay, paintbrushes, etc. For me, band had slide grease, valve oil, trumpet cleaning kit, music books, band shirt, mouthpieces, mutes, music stand, and a trumpet. Other people had cork grease, drumstricks, mallets, swabs, reeds, screwdrivers, ligatures, practice pads, and their own instruments if the school didn’t provide them.
Now, in college, just stick with notebook paper, a small binder, mechanical pencils, and only the required textbooks. Everything else I get as I need it (such as bluebooks, scantrons, and all that).