When teachers are absent, students learn less.
Nerd Alert fact of the day: According to the study, each 10 days of teacher absences reduce students’ mathematics achievement by 3.3 percent of a standard deviation.
When teachers are absent, students learn less.
Nerd Alert fact of the day: According to the study, each 10 days of teacher absences reduce students’ mathematics achievement by 3.3 percent of a standard deviation.