The post-test was administered on January 18, 1997, which was the day after the conclusion of the final term. The pre-test had revealed some slightly significant differences in certain test groups (at the 0.05 level). It was decided to compensate for these differences in the final analysis by using an analysis of covariance (ANCOVA). Possible intervening variables such as age, club activities, etc. were also taken into account. The results of the pre- and post-test are presented below in “Results and Analysis.”