Before you open schools, consider this:
Teachers, administrators, staff and students were sick with and/or carrying coronavirus before the mass closures in March. Anything left behind needs to be carefully removed and incinerated: backpacks, lunch boxes, pencils, markers, papers, etc. all need to be destroyed.
The entire building needs to be disinfected. That means air ducts, stairwells, elevator shafts, pencil sharpeners, walls, ceilings, rafters, cracks in the walls, bleachers, kitchens, championship banners, rugs, gym mats, balls, cafeteria trays, anything that came into contact with humans in March needs to be treated or destroyed.
Schools here average two janitors each. The buildings will need to be fumigated like in the above description every day. That is over a month's worth of specialty work that an average janitorial staff is not trained for nor provided with the materials. That is more work than two people can handle on a daily basis.
What education are children going to get? Between the everyday anxieties, these kids are going to be traumatized with fear of infection and develop a cadre of mental health issues by sending them off to a Petri dish next month. Never mind what mental health issues will develop from having lived through a pandemic. Added to this are irregular classes every other day for half days (and all sorts of other infeasible ideas all based on an unproven assumption that kids aren't as likely to get seriously ill [they have; they will]). It will take months to learn what they normally obtain in a week.
Between a disrupted schedule and exposure to disinfectant chemicals that can cause asthma attacks (or even cause asthma to develop), what is being gained? Are you really that willing to sacrifice the lives of your own kids for "The Economy?"
Ever think that some things are more important?
I am telling you now that school with masks is going to open up a whole new arena for bullying and risk of exposure to those whose masks are stolen or damaged by bullies in addition to ridicule if you have the "wrong design/logo" on them. Are schools really ready to have a new anti-bullying programme for mask etiquette when the parents won't even wear them in public?
What are you going to do with kids who can't afford masks, or who just refuse to wear them because their parents refuse to wear them? Can schools afford to have hundreds of spare masks and gloves on hand? Can schools even afford to disinfect the buildings before reopening at all?
As someone whose parents were teachers, and as a teacher myself, the answer is no. I grew up in American public schools. Our history books didn't know how the Civil Rights Movement started because they were published before it even happened. Our cafeteria and auditorium were the same room (the cafetorium). We shared basic grammar books with three kids to a book. How is a school that doesn't have a textbook published after 1974 going to afford all of this?
Then, there's kids like me who got beaten-up or picked on every day. I know damn well if I were in school with a mask requirement, I'd be the first one to have my mask ripped off and torn in two or punctured with a pencil before my tormentor coughed and spat all over me.
It's bad enough they coughed and spat on me to begin with when they had a cold or flu (or in general), and did so to mock me for having asthma or because I wasn't a jock, or part of the "in-crowd."
This is not going to work, don't even have the conversation on reopening schools until there's a vaccine and it's been distributed to at least 80% of the population. Your children's lives are worth more than this.