From the contest page:
This is an IOI style contest. This means that the problems will be partially graded. You will get score for passing certain test data. The details of the failed test cases will also be visible on your solution page.
So the format of the solution page will be different from what we are used to so far. It would be great if there are a few practice problems to get used to the format of the solution page.
UPDATE There is a new section for this: http://www.codechef.com/problems/school