Moreover, the other handful of studies that lasted for four years might only have done so because they were relatively successful, so that the less successful ones are omitted. (educationnext.org)
To draw policy opinions from a small, selective handful of those studies while ignoring the rest is policy malpractice, and it is dangerous to children. (cato.org)
A recent, comprehensive review of research on teacher leadership found only a small handful of studies in which researchers had actually inquired about effects of teacher leadership on students, and the results were generally not supportive.36 (wallacefoundation.org)