In If you are feeling difficulty in SSC then <a href="http://www.gocareer.in/search/label/ssc">SSC exam</a> there is no method till now made by officials, they do not use normalisation method.
But if in future SSC decides to use normalisation method to take into consideration the difficulty level variations in the question papers across different sessions.

The normalization process is based on a simple formula and based on a few  parameters as discussed below, the  Exam organizing committee arrives at the following formula for calculating the normalized marks for the multi session papers.
[![][1]][1]

Once the answers are checked and assessed, the normalized marks of a candidate will be calculated corresponding to the actual marks secured by the candidate in the examination and the Score card will be devised based on the normalized marks.


  [1]: https://i.sstatic.net/6d2ZO.png