How do you think schools would’ve handled the pandemic if this happened 20 to 25 years ago before we had Zoom?

Go back 100 years. The Spanish Flu was a killer. So, as you well can guess there would be LESS STUDENTS in the end.  Teachers die off too.  It would have been big time social distancing like a farmer's field spacing...for those that figured that out that helps, and besides they worked on the farm by themselves or spaced out much of the time.  You get sick from contact with other people.  No contact= no sick.

Probably still go to school and sometimes stay home while assignments are mailed in or maybe no school at all

this isnt the first pandemic the world has suffered - 25 years ago you would be expected to still go to school

They wouldn’t have closed. Would have made recommendations of safety. Although covid is real the reaction of mass hysteria to it has been abnormal. 

The same thing they did during the flu pandemic of 1917-18. The schools in the hardest hit areas DID close. There wasn't as much concern about everyone graduating from high school back them. 

Outdoor classes or snail mail.

They wouldn't have closed. 

Just like they didn't close in 2017 when we had the worst flu season in 40 years.

Why are schools having such a time re-opening?  Because they should have never have closed.  It's really hard to overcome something that shouldn't have happened.  All businesses are open even in sunny California, except schools. 

We are failing a generation. 

The lessons would be sent to the student's home by snail mail, and telephone conference calls could be set up to teach a class of students.

Everyone would have been left back a grade.