Hi,

I hope you are doing well.

The eligibility criteria for giving the NTSE exam for 2021-2022 is the individual should be below the age of 18 as of July 2020.

Below I’ll be attaching a link where in detailed a proper information is given regarding the exam, eligibility and various other details.

https://school.careers360.com/articles/ntse-eligibility-criteria

I hope this helps.
All the very best.