It won't make any difference in the life of kids with parents having great-dreams-of-what-they-couldn't-do in life. If not board after 10 (in fact, 10+) years of studies it might be school internals to push and prod them.
Also, in the absence of any major common evaluation criteria it would definitely affect the level of studies - not exactly in private schools, but in those govt. schools of far flung areas where sighting teacher is a rarity - earlier teachers had come to schools to complete syllabus for 10th class, but now they can evade this thing.
But yes , for a lot of lives for whole 10th class was a major-meaningless-barrier to achieve there dreams - to get driving-license/enroll into army or all other jobs where metrication was a minimum qualification - it would definitely a boon.