Mattoon to launch tutoring efforts as full-day, in-person classes begin
Journal Gazette and Times Courier, February 16, 2021

Students can 'lose' 50% to 60% in math learning after three months of school closure, says American study
G1, November 4, 2020

Explained: Impact of school closure on student learning, quantified
The Indian Express, November 3, 2020

How COVID-19 school closures could see math and literacy slide
Philippine Daily Inquirer, November 3, 2020