I am in Memphis as well. My high school doesn't require students to purchase their own graphing calculator. We have the Casio Prize (my preference} and the TI-84 for student use during the school day. Students may also check out a calculator to use when ...

Those are the same requirements at my middle school in Memphis. Those also are the calculators students are required to use for state standardized testing. I have considered an option for the Desmos graphing calculator to be an option, because it's free ...

Our school wants 7 - 9 graders to own or have a school issued TI-30.  They also want Algebra II and higher math students to own a TI-84.  In my experience, students use phone app for calculations when they are outside the classroom.   They aren't allowed ...