Why not grade all schools on growth only?

Most Indiana schools earn A-to-F grades on a formula that gives equal weight to performance and growth on standardized tests. But schools in their first three years of operation – most of which are new charter schools and Indianapolis or Gary “innovation network” schools – can have their grades calculated on growth only, with no consideration of performance. Those schools have an advantage.

As Dylan Peers McCoy of Chalkbeat Indiana pointed out, it means you can’t use the grades to compare schools in a district like IPS. “Of the 11 out of 70 Indianapolis Public Schools campuses that received A marks from the state,” she wrote, “eight were graded based on growth alone.”

So why not grade all schools on growth only, not performance? It seems like that would make a lot of sense. In any given year, schools may not have a lot of control over where their students start out in their math and reading performance. What matters is, do schools help students grow?

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