The Rio Piedras campus of the University of Puerto Rico, whose Humanities division was shuttered by student protesters on Tuesday, has now seen that shutdown spread to the divisions of Education and Social Sciences (article | translation).
Students in all three divisions have shut down classroom buildings, leaving them barricaded against entry. So far, neither administrators nor police have acted against the student strikers. A mass student assembly was scheduled for this morning.
The Occupy California blog has additional photos and details of the Humanities action.