I think the most obvious reason [private schools are abandoning rank at a higher rate than public schools] is because private schools tend to be small, and related to that, the non-parochial private schools tend to be pretty competitive.  -   David Hawkins     Quotes
I think the most obvious reason [private schools are abandoning rank at a higher rate than public schools] is because private schools tend to be small, and related to that, the non-parochial private schools tend to be pretty competitive. David Hawkins
 Reason