I think the 25% minimum holds whether the program is fully funded or not. If a program is not fully funded, it will offer fewer than 11.7 scholarships (for instance, instead of spreading 11.7 scholarships out, with a minimum of 25% they would spread out 8 scholarships with a minimum of 25%.
Interesting question on room and board. We were never told that, just that school would cover tuition, which came out to a little over 25%.