I am Tuhin from West Bengal board. I passed Higher secondary exam in 2014. But got 22 in math. I want to Improve my marks for appear for jee main next year. is there any improvement exam in west bengal board for class 12? or should I go for NIOS on demand examination? If I apply for that the marks will be updated in west bengal board class 12 mark sheet or they send me a new mark sheet? Please reply me soon.