School House is an excellent edutainment title whose concept was very innovative for its time. Although there are over 30 mini-games covering a wide range of topics, they all use the same gameplay scheme: two players compete to fill in the blank table with items from their lists that match the given criteria.
To give some examples to make it clearer: in an arithmetic game, you are given a list of equations with an unknown variable that you must solve (e.g., X+2=4). Your goal is to write the equations in order of the magnitude of X, from smallest to largest. So in this case, if 2 is the lowest number among all the answers to the equations, you would have to write 'X+2=4' to eliminate it from your list. Then it is the other player's turn to write some of his or her