Do you mean the 2nd term test? It's not until end of March so I have no idea about it. For the past and the coming ones, there are three days. However, some of the tests like computer & musical instruement, are carried out next week (a week before the designated exam period.) Singing has even been tested this week!
So there may be a little bit different that all the tests will be taken in the 5-days 2nd term test