EdNC.org has a useful tool that helps education wonks and interested parties view the latest school perfomance grades in an interactive manner that allows the user to change major variables. Here is the link to their latest version.
Currently, the formula is calculated with 80% for achievement on standardized tests and 20% on growth. Note that North Carolina is one of seventeen states that uses a school performance grading system.
It is the only one that allows for achievement to outweigh growth.
Here is the current SPG allocations across the state at the current 80/20 formula.
This is what it would look like if NC made the formula 50/50.
And this is what it would look like if NC made the formula 20/80 (inverted from present).
That’s quite the change.