remember that the "95" refers to the percentage of particles blocked at or above 300nm. The particle size of COVID is 150nm. This, even the best available masks to the public have filterration designed to stop particles twice as large as the COVID particle, and even then, only at 95%.
My strong advice to anyone who has legitimate concerns is to stay home and avoid exposure rather than go out because even the N95's are inadequate. Now you can see why I have called this such a placebo push by the Left. This is the BEST case scenario, and even then, it is like trying to hold a mosquito out of your window with a tennis raquet. The water droplets at 3 mm are stopped 95% of the time, but smaller droplets go through as do broken off droplets, and the amount of innoculum is still enough to infect, though maybe at a lesser rate which is why there might be some benefit in this case of the best available mask being used properly with fitting and single use, but not ideal by any means. And almost all people aren't following proper rules, using cloth masks, reusing saturated masks, and practicing horrid sterile technique. Now consider it in the case of the kids in these schools in the article who can't even come close to practicing what would be necessary, and are not using proper equipment.
This is why I have been so clear about my disdain for this placebo policy.