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High-dosage tutoring, sometimes called “high-impact” or “high-intensity” tutoring, is one of the few school-based interventions with demonstrated significant positive effects on math and reading achievement. Yet high-dosage tutoring is a very specific form of tutoring that must meet specific criteria:

• One-on-one or small-group sessions with no more than four students per tutor
• Use of high-quality materials that align with classroom content
• Three tutoring sessions per week—at minimum—each lasting at least 30 minutes
• Sessions held during school hours
• Students meeting with the same tutor each session
• Professionally trained tutors who receive ongoing support and coaching

Small, regular interactions with a reading tutor — about 5 to 7 minutes — are making a big impact on young students’ reading skills, new Stanford University research shows.

First graders in Florida’s Broward County schools who participated in the program, called Chapter One, saw more substantial gains in reading fluency than those who didn’t receive the support, according to the study. They were also 9 percentage points less likely to be considered at risk on a district literacy test.

The first randomized controlled trial of a virtual tutoring program for reading was conducted during the 2022-23 school year at a large charter school network in Texas. Kindergarten, first and second graders received 20 minutes of video tutoring four times a week, from September through May, with an early reading tutoring organization called OnYourMark. Despite the logistical challenges of setting up little children on computers with headphones, the tutored children ended the year with higher DIBELS scores, a measure of reading proficiency for young children, than students who didn’t receive the tutoring. One-to-one video tutoring sometimes produced double the reading gains as video tutoring in pairs, demonstrating a difference between online and in-person tutoring, where larger groups of two and three students can be very effective too. That study was published in October 2023. 

Susanna Loeb is named to the 2024 RHSU Edu-Scholar Public Influence Rankings, recognizing the 200 university-based scholars who had the biggest influence on educational practice and policy last year.

For the full list and to learn more about the rankings, visit The 2024 RHSU Edu-Scholar Public Influence Rankings.

High-dosage tutoring programs have expanded significantly, with nearly 40 percent of schools now using individual and small-group tutoring with trained teachers or tutors four or five days a week. This approach has been shown to boost student learning, but it can also be expensive. A new study by the National Student Support Accelerator at Stanford University suggests virtual tutoring could be a less-costly option, if it remains as intensive and rigorous as in-person tutoring.

"We're pretty clear on the big picture about what makes tutoring work, and it is focused on intensive, relationship-based, individualized instruction," said Kathy Bendheim, managing director of the National Student Support Accelerator. After-school tutoring has spotty attendance records, she said, and on-call, web-based tutoring may not be tailored to the student or used very frequently, either.

Thankfully, states and districts aren’t sitting on their hands in the face of learning loss. Supported by billions of dollars of federal funds, many have invested heavily in tutoring programs that promise to help struggling children overcome the challenges imposed by past school closures and virtual instruction. The question is whether those efforts work for enough students to justify their cost — and according to data generated by the National Student Support Accelerator, a Stanford initiative devoted to studying the effects of tutoring, there is reason for hope.

Transformative change in education often begins with a powerful story. Increasingly, high-impact tutoring is that story, where students find both significant academic success and personal confidence in their abilities. Rhyne Richards—a 6th-grade student in Washington, DC.—met several times each week with a tutor, Ms. Burns, to overcome math challenges. Rhyne’s journey speaks volumes. “I get distracted a lot [in class],” Rhyne admitted. “But when I’m with Ms. Burns, I learn a lot; a lot more than I knew last year.” It’s a testament to the remarkable impact of intensive, one-on-one tutoring. “I’m proud of myself,” Rhyne continued. “Before, I didn’t really know math like I do now. But now I can do it myself. I want to be the smartest person in the world.” Rhyne’s regained confidence in math and optimism for the future epitomize the profound evidence for and influence of intensive, relationship-based, individualized instruction—it is a narrative we must tirelessly work to replicate and scale.

Those results are not unique to Oakland. Another recent study on a virtual early literacy tutoring model called OnYourMark found minimal impact in second grade. The lack of growth could be due to a mismatch between tutoring and testing, said Susanna Loeb, a Stanford University professor who leads a nationwide tutoring research center and conducted the OnYourMark research.