I was looking at the historical statistics of school enrollment of Indian students. I saw something that didn't make sense. If you look at the graph below, you will see that there is a sudden drastic dip in both Primary and Middle Level education for 2000-01.
(Click to enlarge)
Source (Warning: 9.90 MB PDF)
I can't think of any plausible reasons why there would be such a drastic drop, and then from next year things continue as if there wasn't a tragedy. The best I could come up with is that they redefined what enrollment is or unearthed a scam on bloated statistics. Both don't seem very plausible. Does anyone know better?