I think this is great in concept, but I find the trackpad very frustrating to use, and the buttons are LOUD. I can't imagine using this on an in-class test without bothering other students. I like this CAS version better than the plain CX, but it is still very frustrating to use. It's not particularly useful at home, either, as there are better and easier to use computer algebra systems available for laptops. This product occupies an awkward space in-between a calculator and computer and doesn't pull off either particularly well. Stick with the TI-84 Plus CE.