Low-ability children placed in a high-ability group may lose interest in learning activities …

„Low-ability children placed in a high-ability group may lose interest in learning activities beyond their reach and may consequently display a lower learning rate than their high-ability peers.“

Dr. Guanglei Hong, University of Chicago, „Differential Effects of Literacy Instruction Time and Homogeneous Ability Grouping in Kindergarten Classrooms: Who Will Benefit? Who Will Suffer?“. In: „Educational Evaluation and Policy Analysis“ (2012), S. 75