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[quote=Anonymous][quote=Anonymous][quote=Anonymous]
the percentage of Blair magnet students who come from "Westside schools" is nowhere near as high as folks on DCUM seem to think. There are a lot of in-bounds kids, some kids from other DCC schools, etc. [/quote]
Roughly 40% of the 81 OOB magnet kids who took SAT's at Blair belong to the cohort if someone wants to figure it out.[/quote]

Here’s a ballpark attempt to eliminate the out of boundary magnet scores from Blair’s SAT average for the largest common cohort.

1526 Blair Magnet SAT average
1326 Blair SAT average score for common cohort
250 total number of kids from cohort that took SAT
32 number of out of boundary magnet kids from cohort that took the SAT
where “x” is Blair’s in boundary SAT average for largest common cohort

(250 - 32) / 250 = 87% non-magnet cohort total
13% magnet % of cohort total

0.85x + 0.13 * 1526 = 1326
0.87x + 198 = 1326
0.9x = 1326 – 198
x = (1326 – 198) / 0.87 = 1296 SAT average without

Blair’s SAT average for the largest cohort common to those schools even without magnet scores is still respectable, but mostly aside the point that these schools are pretty much the same when looking at similar cohorts.[/quote]

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