There's a lot going on in your observation, and this is all speculation on my part (even though I am a Khan Academy employee).
We did have quite a bit of usage and awareness among schools already before the shutdowns started. Couple that with there being many options for teaching online… I wouldn't be surprised if a lot of schools just switched to having their teachers attempt to do their normal teaching via Zoom (which sounds really hard to me!). Many schools had contracts of various sorts with other online learning platforms.
Some schools or classes haven't had great follow through rates, which is unfortunate, but educators all over have had to quickly adjust. I suspect that more robust plans will be in place by the fall, given how much uncertainty there is for fall classes. Khan Academy is, at least, an always-free resource that's there for people if they need it.
That 2.5x is starting from a large base, and there's also a lot of activity in online education generally.
"I wouldn't be surprised if a lot of schools just switched to having their teachers attempt to do their normal teaching via Zoom"
This is exactly what is happening in our school district and it is a big failure. That and teachers emailing their lesson plans for parents to print or parents can go to the school and pick up printed packets. We then have the joy of taking photos of the completed work and emailing those back to the teachers.
It is extremely inefficient and I have already informed our school that we will not be doing that if we are stuck in this scenario come fall. We will be using Khan for math and other online learning platforms for LA.
Its also coming up to exam season and summer holidays in a lot of places. Seeing the same with my product. We run it internationally so there is a spectrum (country dependant) about usage changes. Some are the same, or less, some are 2-3x more but only certain days of the week. One was 1000x more, but only for one week and is now just normal. It's been pretty crazy.
We did have quite a bit of usage and awareness among schools already before the shutdowns started. Couple that with there being many options for teaching online… I wouldn't be surprised if a lot of schools just switched to having their teachers attempt to do their normal teaching via Zoom (which sounds really hard to me!). Many schools had contracts of various sorts with other online learning platforms.
Some schools or classes haven't had great follow through rates, which is unfortunate, but educators all over have had to quickly adjust. I suspect that more robust plans will be in place by the fall, given how much uncertainty there is for fall classes. Khan Academy is, at least, an always-free resource that's there for people if they need it.
That 2.5x is starting from a large base, and there's also a lot of activity in online education generally.