This isn't a technology issue. TI has a monopoly because they spent a lot of money going after the teachers. Teachers just want something that they know. They a

This isn't a technology issue. TI has a monopoly because they spent a lot of money going after the teachers. Teachers just want something that they know. They already don't get paid well and have a struggle just to get kids to learn the basic stuff. They just just want something that works and is well supported. Here is a good article about the how TI goes after the teachers: https://mashable.com/2014/06/03/ti-calculator-evolution/ https://mashable.com/2014/06/03/ti-calculator-evolution/