UML and case tools were all the rage 5-10 years ago, but have fallen out of favour with the rise of Agile methodologies. I have a feeling* that the teaching of software engineering at university lags about that same distance behind current industrial practice. So in another 5 years time I'd expect universities to have largely abandoned teaching UML except for in certain niche classes.
* I don't have any facts to back this up, it's really just a guess.
Keep in mind that many parts of industry itself lag 5-10 years from the leading edge of industry. And the parts of industry many universities track--i.e. the large firms that employ graduates by the dozens--are not the companies on the leading edge. This is probably more the case for your middle tier state universities than for Stanford or something, though.
* I don't have any facts to back this up, it's really just a guess.