I don't like tests as a learner and I don't like giving tests so much as a teacher but I think in some ways tests have some advantages that you can't get that informaton any other way.

作为学习者来说，我不喜欢考试，作为老师来说，我也不喜欢给学生考试，不过我认为从某种方面来说，考试也有优点，可以得到其他方式得不到的信息。

youdao

As the teacher is with the learner next to him, it goes down.

如果电击者与被电击者一起,站在被电者击旁边，致命电击次数减少。

耶鲁公开课 - 心理学导论课程节选