1、One possible version,

On Exams in Schools

The usual exams with three different roles in schools can be used to effectively check students’ memory or evaluate their ability, have inspiriting function to cultivate many qualities essential to students' development, such as ambition, perseverance, discipline and so on, and can tell a teacher how efficient his or her teaching is.

But too many exams can bring side effects to the students, such as too much pressure, worries, upset and so on. Besides, high emphasis on knowledge rather than ability in the exam may restrict the student only to memory not to their development or innovation. So we may improve exams to design the questions in the test focusing on ability and skills, not the stiff knowledge. Finally, exams can manifest in diverse forms, written test is one kind, not all. So in the future, besides closed test, teachers are encouraged to develop other kinds of exams.