Characteristics of 2020–21 Public and Private K–12 School Teachers in the United States, National Center for Education Statistics (Dec 2022)
77% of public school teachers were female; 75% of private K–12 school teachers were female.
52 hours/week: both full-time teachers in public an private K–12 and schools spent an average of 52 hours per week on all school-related activities, including the 24-25 hours per week they were paid to deliver instruction.
HS Network Comment: 52 hours/week is a long time to be breathing polluted indoor air.