The National Institute of Open Schooling (NIOS) was known as National Open School (NOS) has decided to conduct the Supplementary examination for 10th Class and 12th Class on October, 2011.
Usually NIOS published the notification for upcoming exams by the mean of Date Sheet or Time Table regardless of regular or revaluation exam for those who are failed.
You can able to download the NIOS Date Sheet 2011 – 2012 from the September 1st week. Generally exam starts in Mid of October and run for 15 days at max. http://www.nos.org/date-sh.htm is the page you can often check to get any update and news.
NIOS Date Sheet of October 2011 will be published in separate pdf file for both 10th Class and 12h Class students. Your comments are most welcome, in case of any query for www.nos.org !!