The preliminary guidance, issued by Jeff Riley, the state’s commissioner of elementary and secondary education, offers no advice on how schools configured for 20 students and more per class should accommodate the much lower student-teacher ratios.

The guidance calls for

Maintaining six feet of separation at all times,
Assigning individual groups of students to one teacher who should not mix with other students or staff,

Restricting sizes to a maximum of 10 students, with a maximum of 12 individuals, including students and staff, in each room.

Is this scenario even possible?