This have both negative as well as positive effects.
There will be a positive affect for most of the students appearing for their board exams but those students who are hard working it will affect them a lot. Those who are in the top and actually they are the deserving students they will be affected in a huge way.
Again, competition leads a student to work more and more hard to defeat their competitors. If there will be no competition at all among the students then automatically most of the students will stop hard working. According to my opinion this should not be stopped.