The Case for Quality Over Quantity in Academic Recovery
As schools confront pandemic learning loss, new research indicates that investing in smaller tutoring groups yields a far higher return on investment.
As schools nationwide look for ways to close the pandemic-era achievement gap, "high-dosage" tutoring has emerged as a premier solution. However, implementing these programs at scale presents a difficult financial dilemma: should a school with a limited budget prioritize frequent sessions or smaller group sizes?
In a new field experiment conducted at a KIPP charter middle school in Indiana, Yale economist Rohen Shah tested this trade-off directly. The study followed 343 students who were randomized into three groups: a control group, a "quality" group (tutored twice a week in 2-student groups), and a "quantity" group (tutored three times a week in 3-student groups). Crucially, both tutoring formats cost exactly the same—$40 per student per week—allowing for a side-by-side comparison of return on investment.
The results were striking. Students in the 2-student groups saw a significant improvement in math skills, gaining approximately 0.23 standard deviations on their MAP math assessments. In contrast, students who received more frequent tutoring in the larger 3-student groups saw no significant improvement at all. These findings remained consistent even after accounting for student attendance and different types of statistical testing.
Why did smaller groups work better despite meeting less often? Shah suggests that smaller group sizes may allow for closer relationships to develop between tutors and students, which is essential for effective learning. Furthermore, because the tutors were college students rather than professional educators, they may have lacked the advanced classroom management skills required to handle three students effectively at once.
For policymakers and school administrators, the takeaway is clear: when budgets are tight, cutting the frequency of tutoring is a better "policy-based" choice than increasing the number of students in a group. Prioritizing the intimacy and quality of the 2-to-1 ratio ensures that every dollar spent actually translates into academic growth.