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[quote=Anonymous][quote=Anonymous][quote=Anonymous]One way to better understand the quality of education of one school or another is to perform more granular apples to apple analysis.  Simple averages for standardized state test that GS uses for its ratings only serves to identify which high-schools draw a higher percentage of affluent kids. A better approach is to look at the granular data. When you isolate for race which is proxy a for socioeconomic status there is not much of a disparity between the performance of kids of the same backgrounds across these schools. For example, when you compare average SAT scores for MCPS schools for a larger demographic common to all these schools the GS narrative falls apart and it becomes clear they're not all that different.

Blair 1326
Walter Johnson 1275
Wooton 1262
Churchill 1257
Wheaton 1173
Einstein 1148
Kennedy 1088

https://montgomeryschoolsmd.org/departments/sharedaccountability/reports/2017/1771102HS%20Princ_SAT%20Partic_Perf%20Class%20of%202017.pdf[/quote]

When most of the few white kids at Blair are in the magnet and from OOB, does that misleading statistic about there scores really speak to the experience of the other 3000 kids who score closer to the bottom of the county and live among pockets of concentrated poverty. That is the real blair, some math wiz stem kid from Chevy Chase was going to do great no matter where he took the test.

Me personally I’ll take a school full of that peer group compared to driving across town to a sketchy area with only a couple class rooms that most of the local kids don’t have access to. You don’t seem to be proclaiming that peer group’s SAT average??? Let me give you a hint, it’s really low but that is the true Blair peer group experience.[/quote]

There was a post here a few weeks back that crunched the actual numbers for this. The impact of the magnet on this cohorts average wasn’t significant.  At Blair, there are 100 juniors in the magnet of which fewer than 80 are from out of boundary largely because of the 25 person set aside at TPMS which gives the in-boundary kids a leg up.  Anyway, about 40% of those 75-80 students belong to this cohort group. This boosted the SAT average from 1296 to 1326. Point being [b]even without the magnet in a head to head comparison Blair outperforms any W by a statistically significant margin[/b]. It's hard to argue with facts, but I'm guessing you'll try. :D

[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 public knowledge
1326 Blair SAT average score for common cohort from report
250 total number of kids from the cohort that took SAT according to report
32 number of OOB magnet kids from the cohort that took the SAT (40% of OOB 80 = 32)
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
[/quote][/quote]

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