https://pmc.ncbi.nlm.nih.gov/articles/PMC9769479/

https://journals.sagepub.com/doi/full/10.1177/07342829211053668

https://web.stanford.edu/~johntayl/2020_pdfs/SIEPR_Policy_Brief_August2020.pdf

https://books.google.ca/books?hl=en&lr=&id=fUktEAAAQBAJ&oi=fnd&pg=PA252&dq=in-person+vs+online+learning+high+school+&ots=byZJrB_qUb&sig=G4mJM3cbSsqvQYCgctq25zKJXiM#v=onepage&q=in-person vs online learning high school&f=false