What a band 7.0 answer sounds like
I don't think technology will replace teachers, although it'll certainly change what they do. A computer can explain a topic or check answers instantly, but a good teacher notices when a student is confused or demotivated, and responds to that, which software can't really do yet.
As for schools, I'd expect them to become more flexible. Students might spend part of the week learning online at their own pace, and the rest working on projects in groups. That said, there are risks. If too much teaching moves online, children who lack a quiet place to study or reliable internet could fall behind, so governments would have to make sure that everyone has access.