Ontario closed schools for 20 weeks between March 2020 and May 2021.
Standardized tests measure student academic progress—but also help measure teacher performance.
Students in the province have missed at least 21 weeks of in-class learning in less than two years.
The province's students were behind in math, science, and reading even before the pandemic.
B.C. has the highest rate of independent school attendance in Canada.
Parents need reliable information based on data to make informed decisions about education.