Bellwether’s Chad Aldeman compared the number of hours of live instruction planned this year for 5th-, 8th- and 11th-graders in 10 large districts with their state’s requirement for the amount of school time students should normally receive. Chad’s local Fairfax Virginia’s remote learning schedule offers less than half of a typical school year to my first-grade son. Here’s how 10 of the nation’s largest districts are doing.