CLAYTON, Mo. (AP) — 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. The new regulations also require businesses to deny entry to customers who refuse to wear face coverings.