Ouch! As a hiring manager, the "Javascript only" model is a serious roadblock.
Nothing against node.js, but a candidate would be marketable to a broader range of shops if the program gave them a basic grounding in Python and SQL. Python is well accepted for both web servers and sysadmin type scripting. SQL is the most common choice for databases. I don't think either one would be a incremental burden and would really open up the number of potential employers for the grads.
Out of curiosity, what kind of scripts can you write in Python that you cannot in Node.js?
Don't get me wrong, Python is great and has a number of really great number crunching libraries just a pip away, but if all you're doing is developing web apps and hashing out some scripts via the terminal... they'll need to know JavaScript for the client - but do they really need to come away with two languages after 3 months?
Nothing against node.js, but a candidate would be marketable to a broader range of shops if the program gave them a basic grounding in Python and SQL. Python is well accepted for both web servers and sysadmin type scripting. SQL is the most common choice for databases. I don't think either one would be a incremental burden and would really open up the number of potential employers for the grads.