Mark Adding Policy of College Entrance Exam

(You do not need to repeat your topic.) 
The mark adding policy of college entrance exam has been practiced for a long time. Although college entrance examination of this year has finished, many people pay much attention to the issue of awarded marks. (You don't need a "yet" after "Although" as "Although" means that something occurs in spite of this fact that college entrance exams have finished for this year. To say "yet" afterward would be like saying "but" two times.)
Some people think this policy should be cancelled. Due to the impression of the mark system, the whole test process is not effectively controlled, and the policy has become a tool for some people to ask for interests for themselves. However, others think the policy should be perfected, for it is helpful to the student who has some specialties, but is poor at some subjects. The mark adding policy can encourage stuedents to attend more activities besides studying.
From my point of view, the merits of mark adding policy do outweigh its drawbacks (There is no such word as "dimerits" in English.). Although the policy still has some defects, it will bring more benefits to all if a rational criteria can be estabished.

(I am afraid I do not understand about this college entrance exam system, as the system is different in the US, so I did not correct for content or meaning as much. Apart from the corrections above, I just corrected for grammar, spelling, and punctuation.)