Colorado College’s block plan does seem to be advantageous to a student who wants to concentrate in a particular department and get to upper level courses quickly. When courses involve travel or field study, the one course at a time format can be advantageous, since there are no issues with missing other class sessions.
However, it does increase the chance of schedule conflict with courses from other departments which do not coordinate which blocks each course is offered. For example, in the fall, there are effectively only four possible time slots for a class session to be in (the four blocks), compared to many more possible time slots each semester in a traditional college calendar, increasing the chance that two courses of interest are offered at the same time (same block).