Sure, my local vocational school does offer a certificate and diploma of software development - a 2/3-semester program which teaches a couple of Java and C# courses and how to use a database. Which is to say, it teaches you the bare minimum you need to know to become the most junior level of applications developer in an enterprise IT department - vastly, vastly underqualified to go into many of the kinds of jobs that expect CS degrees.

The other problem is that, well, I actually liked the theoretical and conceptual side of doing a CS degree, learning from lecturers who were researchers in the field. I, and most of the good software engineers I know, would have regretted just going to a vocational school.

IMHO, there's a third option worth considering. Here in Australia, lawyers start off by obtaining a law degree (a Bachelor of Laws or a Juris Doctor) from a university. However, before they're admitted to practice, they have to obtain a Graduate Diploma of Legal Practice - a 6-month course which focuses on the practical skills of being a lawyer.

I don't see why there couldn't be a similar type of program to teach practical software development workplace skills - obviously, not as some kind of mandatory licensing program, but as an optional extra.

... most of which don't actually need CS degrees, but in the absence of the rigorous vocational programs, it's a reasonable filter to get candidates who have a clue.