though i am not in IIT, yet i am preparing for iit jee this year as a first attempt .
I have passed 12th just this year in 2010. Actually, mai khud apne aap par naaraz hota hoon ki maine 10th ke baad hi foundation coarse kyon nahi kiya.
Actually mujhe lagaa ki IIT ki preparation bahut hi kathin hoti hogi, but it was one of the biggest fault of mine. Mujhe laga ki mai school aur coaching dono ko saath - saath nahi jhel paaunga. But jahaan chah hai, wahi raah hai.
Aapko khud pe hi vishwaas karna hoga. Yaar, tumhe statistics ka kya karna hai? Just go on $ on $ on with your studies.
Well i can tell you that you should mug up the NCERT books for better preparation.
I can just tell you that how many students clear IIT from different boards (in UP)
CBSE Board- 57%
UP Board -38%
Isc Board -5 %
Hope, you would be satisfied with my answer.