2) Differentiation Ends Ability Grouping Rather than achieving its purported goal – to tailor instruction to the diverse needs of students – [ability grouping] has, over decades of extensive research, been repeatedly found to be harmful to students enrolled in lower tracks and to provide no significant advantages for higher- tracked students -National Education Policy Center (http://bit.ly/1u5ViMz)http://bit.ly/1u5ViMz
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