As a preface, I don't think Cakewalk has a chance in the education market for a couple of reasons:
It's Windows-only. This is a self-limiting situation for the DAW.
The industry standards are pretty solid in the Composition and Scoring space: Cubase Pro (and Nuendo, naturally), Logic Pro X, and Digital Performer. There is no reason to forego them.
Cakewalk by BandLab is tied to a Social Network. Schools would view it like requiring Facebook to use a DAW. It would be a non-starter for many, if not the majority.
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The mediocre Staff View would be less of an issue if Cakewalk had a full ReWire implementation, but it doesn't. By that, I mean Cakewalk doesn't support ReWire MIDI Input (it can only Output). If it did, then you wouldn't need a better Staff View ASAP. You'd only need a cheap Notation Program that was significantly better than Staff View.
For example: PreSonus Notion 6 on sale for < $70.
So, you'd route your staves in Notion to ReWire MIDI Channels and then set the MIDI Input on your Tracks in Cakewalk to the applicable ReWire MIDI Channels coming from Notion; and the outputs to the applicable virtual instrument.
You can compose in Notion, etc., and when you're done, you just record the MIDI to those tracks; at which point, any further tweaking/editing can be done in Cakewalk by BandLab on the Piano Roll.
MusicXML Import would also be nice to have.