Using Rollapp
If you don't want to go through and download Linux on a Chromebook, you can access the Musescore composing program through roll app. Go into the Chrome Web Store and search "Musescore" and install the roll app version. Once you follow the instructions to sign up, you can compose as you regularly would with the Windows version.
Comments
Used to be mentioned in the handbook, see https://musescore.org/en/node/278672/revisions/443375/view, but got removed in favour of the Linux version, see https://musescore.org/en/node/278672, I guess mainly due to the restrictions mentioned: Note that currently, sound and playback does not work on rollApp.
In reply to Used to be mentioned in the… by Jojo-Schmitz
I believe this now works with a paid account, but the whole process - including creating the account, setting it up, setting up file access, etc - is far more complicated than the half a minute it takes to install the Linux version. But, it is good that RollApp is available as an option for those who cannot install Linux apps (which unfortunately includes a fair number of Chromebooks used in schools). And it's certainly cool technology!
In reply to I believe this now works… by Marc Sabatella
If so, it should get mentioned again in the handbook
In reply to If so, it should get… by Jojo-Schmitz
I can't verify, just going by what I've heard.