When I was in the 8th grade, our girls varsity basketball team went to Nike tournament of champions on Las Vegas, which is arguably the national tournament of high school teams… they took second… they had 7 division one full scholarship signs… our 8th grade team played a full scrimmage against them and we won by 50 points.
I truly think a WNBA team could be beat by an average-above average varsity high school boys team.