I think this is a step forward, there were several times when I wished we could use programs such as Matlab in class, instead of a TI89 or similar. Our school doesn't require computers in class, so while we could use Matlab to do our homework, we couldn't use them on quizzes and exams. Requiring laptops would allow professors to let us use more powerful programs rather than having to resort to the clunky 89.

As far as Thinkpad goes I agree with other posters that it should just be a minimum requirement but I have a feeling the school can offer them at a discout to its students and that it will simplify repairs too, laptops are much easier to break than calculators.