Hello aspirant

It is not impossible to score 90% in nios public exam but yes it is a bit challenging to score well. The reason behind this is that many people arr preparing for other career options and entrance exams along with nios boards therefore they neglect this while preparing for other entranced.

The only way you can do well in both is managing your time well and putting in a little extra efforts.

Also make a proper study schedule where you can devote time to both.

In the end, the marks a student obtains depends on his/her hardwork and not on the board system.

Hope this helps