This isn't Bash or Ubuntu running in a VM.
This is a real native Bash Linux binary running on Windows itself. It's fast and lightweight and it's the real binaries. This is an genuine Ubuntu image on top of Windows with all the Linux tools I use like awk, sed, grep, vi, etc. It's fast and it's lightweight. The binaries are downloaded by you - using apt-get - just as on Linux, because it is Linux. You can apt-get and download other tools like Ruby, Redis, emacs, and on and on. This is brilliant for developers that use a diverse set of tools and platforms.
So for example I type bash then VI in the Bash windows and hay presto
For more details on Bash and CMD line tools see http://blogs.msdn.microsoft.com/commandline this is a brand new blog 30/03/2016 so expect more details and information over the next few days.
Scott Hanselman has also recorded this great video with the Ubuntu team 30 min video with developers from the project as well as Dustin from Ubuntu about HOW this works if you want more technical details.
This is an early developer experience and the team will be collection feedback and comments. You'll find Ubuntu on Windows available to developers as a feature in a build Windows 10 coming soon.
Love to hear your feedback especially from Computer lab managers exploring and seeing how bash on Ubuntu on Windows fits into your Student developer activities