you are making up standards, 15-17 percent is double the rate, so the extra spending and hours is doubling the rate compared to their piers, students from other neighborhoods are not their piers
as for the dropouts that is why we need more charters and less public schools
I'm not making up anything. Like I said, you haven't established how much that score relies on fluffing and how much is due to actual education.
As I said, if you only keep the best of that pool from which the peers are drawn, it would be easy to end up with these scores. Public schools don't have that option. If they were all charters, either the charters would start performing like the public schools, if forced to keep the low performers, or the kids would have nowhere to go.
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