Unfortunately, the first major evaluation of Head Start, published in 1969, failed to find permanent IQ gains, thereby raising the question of whether Head Start was incapable of influencing intellectual development or was just implemented poorly. (educationnext.org)
The dollars ultimately yielded disappointing results, however, with the only major evaluation (a joint American Institutes for Research and RAND study1) finding no effect on student achievement. (ascd.org)
Cost and Tracking Error are two major evaluation factors when it comes to choosing any passive fund i.e. either index fund and / or Exchange Traded Fund (ETFs). (passivefunds.in)