St. Louis County will expand its requirement on face coverings, including a requirement that all students kindergarten through high school wear one.

CLAYTON — St. Louis County will expand its requirement on face coverings, including a requirement that all students kindergarten through high school wear one.

The St. Louis Post-Dispatch  reported that the new guidelines were announced Friday. The guidelines are effective starting Monday.

The school regulation applies to private as well as public schools, for all students in kindergarten through 12th grade. They may remove masks for physical education, choir or music class, during school-sponsored sports, or while eating, as long as they remain six feet apart.

Beyond school, children 6 or older will be required to wear face coverings in public. A previous order applied to children 10 or older.

The new regulations also require businesses to deny entry to customers who refuse to wear face coverings. A previous order authorized businesses to deny entry, but did not require it.

St. Louis County has reported 16,758 confirmed cases of the coronavirus and 700 deaths. Both figures are the most for any county in the state.