Soundtrap
Soundtrap is a cross-platform, web-based DAW. Like BandLab for Education, it has a secure walled garden which means its safe for young people to collaborate within their virtual classes. It is well-designed, has all of the basics that you'll need to explore music production, and you can access your tracks from any device, anywhere. Unlike BandLab, Soundtrap usually charge a subscription, however....
"In response to current needs, Soundtrap for Education (creative sound recording software) is being offered for free, on an extended trial basis, for any school that signs up to try it with students this semester. Free access will apply to all schools that register for a trial account, including those that are not currently closed or directly impacted by the coronavirus pandemic. Our team will work with educators to ensure access to our studio continues through the end of their semester." More info available here.