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Avoiding the Errors of Supplemental Educational Services (SES) – Robert Slavin's Blog
https://robertslavinsblog.wordpress.com/2021/02/11/avoiding-the-errors-of-supplemental-educational-services-ses/
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“The definition of insanity is doing the same thing over and over again, and expecting different results.” –Albert Einstein Last Friday, the U.S. Senate and House of Representatives passed a $1.9 t…
