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By way of explanation, back when the Similar Schools rankings came out in May, I did a bit of digging into the California Department of Education's database to find out which schools are considered most "similar" to Sonoma Valley High, that also happened to receive high rankings.
Two schools within 20 places of Sonoma on the School Characteristic Index had 10's on the Similar Schools ranking, but both have less than 200 students. So, I instead turned to those that were ranked a 9, that had a demographic profile roughly similar to Sonoma. There were three -- Etiwanda High, Eleanor Roosevelt High, and Paloma Valley High. All three are located in Southern California. They all have ~2,000 students. And they all do well on the Statewide ranking as well as the Similar Schools ranking -- they're 8's on the first, and 9's on the second.
At this point, I shouldn't have been surprised by the data, and I suspect my regular readers won't be, either. Sonoma Valley's kids were the lowest ranked in the group in 1995. But by 2004, Sonoma Valley's performance surpassed all of the highest ranked "Similar Schools." (Sonoma Valley would go on to pass all the nearby private high schools the following year.)
Since 2005, Sonoma Valley's graduates aren't just outcompeting the students from the neighboring private high schools. They're also outcompeting the students from the highest ranked "similar" public high schools.
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