Introduction - If you have any usage issues, please Google them yourself
Statistics student achievement: student achievement with 20 (you can set himself points), try to program statistics less than 60 minutes, respectively, 60 ~ 69,70 ~ 79,80 ~ 89,90 ~ 99 points and 100 points, the number of co-exist into the S1, S2, S3, S4, S5, S6 units