Dear Anita,

The eligibility criteria for the NEST 2019 exam is as follows -

The candidate should have passed their 10 + 2 exam in either 2017 or 2018 or will be passing in 2019. Education Qualification - The candidate should have at least 60% in aggregate in their 10 + 2. SC / ST / PWD candidates at eligible at 55% only. 

Hope this helps.

Good luck!