The DOE grading policy for 2020-2021 is out (see below thanks to Jeff Kaufman).
From the document:
Updating courses not successfully completed
If a student does not pass a course by the deadline, the original ‘NX’ mark must be updated to an ‘NC’ (no credit). The mark of ‘NC’ does not have a numeric equivalent and will not be calculated into a student’s grade point average. No final mark may be awarded in any terms other than the original term in which the student earned the initial ‘NX’.
Attendance can't count but class participation can:
• Attendance may not count toward grades: Attending school, participating in class, and demonstrating understanding are all essential components of student learning, and school communities must make every effort to ensure that students attend school, with a goal of every student, every day. Students’grades must reflect the extent to which they have met the learning outcomes for their courses. At the high school level, any student who achieves the learning outcomes for a course must be granted credit, as described in guidance from the New York State Education Department. When students attend remote and blended learning consistently, they have the greatest opportunity to make progress, receive support from their teachers, and demonstrate their learning. Schools have flexibility in determining the factors that contribute to grades as described in their school-wide grading policies. With the understanding that course time is no longer a requirement for earning credit, courses that currently include attendance as a factor in student grades must remove that factor completely. Schools should use Insight to monitor attendance trends and guide continuous improvement strategies.