Although you will get more advanced models, the TI-84 has each of the performance needed for calculus, trig, statistics and a lot more. However, should you be needing a graphing calculator for physics or chemistry you'll need a far more superior variation just like the TI-89 alternatively. High quality graphing calculators are high-priced, costing as much as $260, but you might get low-cost kinds should you look around.