求翻译：这个方法听起来可行，可真正实施起来就是另一回事了。虽然每个团队成员都工作非常努力，但不知为什么，他们的努力就是无法转化为学生成绩的明显提高。当基金会主席和执行副总裁想要这些团队做更多时，他们听到的是很多“七宗罪”式的回答。一个团队找了个“跷跷板交易”式的借口：“我们当然可以在课外活动上多花些时间，但是这样的话，我们跟父母的活动就会大大减少。”另一个团队则用一个模糊的时间表来推脱，说学校问题积重难返，需要很长时间才能看到效果。是什么意思？

The method sounds workable can really implement it is another thing. Although each team member is working very hard, but I don't know why, their efforts is not converted to significantly improve student achievement. When the Foundation President and Executive Vice President when you want the team to do more, they heard was a lot of "seven sins" type of answer. The team found a "seesaw trading"-excuse: "of course we can spend more time on extracurricular activities, but in this case, we talk to parents of activities will be significantly reduced. "Another team with a vague timetable to shirk that schools issue go around apologising, is taking a long time to see the effect.