Demand change to South Carolina Uniform Grading Policy

In 2015 SC Dept of Ed. Lowered the uniform grading scale to an unacceptable level. We demand change!!!
Current scale:
A=90-100
B=80-89
C=70-79
D=60-69
F= lower than 60

I ask you if students are receiving a 60 as a passing grade are they really understanding what's taught.