Evidence that tutoring works  https://www.govinfo.gov/content/pkg/ERIC-ED464343/pdf/ERIC-ED464343.pdf

Accelerated student learning with high-dosage tutoring (Brown University)   https://annenberg.brown.edu/sites/default/files/EdResearch_for_Recovery_Design_Principles_1.pdf

Tutoring a time-tested solution to an unprecedented pandemic (Brookings Institute) https://www.brookings.edu/blog/brown-center-chalkboard/2020/10/06/tutoring-a-time-tested-solution-to-an-unprecedented-pandemic/

U.S. Dept of Education

Issue Brief: Academic Tutoring in High Schools:  https://www2.ed.gov/rschstat/eval/high-school/academic-tutoring.pdf

Elevating Teaching https://www.ed.gov/teaching

High-Quality Tutoring: An Evidence-Based Strategy to Tackle Learning Loss:   https://ies.ed.gov/ncee/edlabs/regions/west/Blogs/Details/34