Hey Usha

Here are the steps you can follow to join NTSE exam 2020

Visit  www.ncert.nic.in and click on apply for ntse.Fill in your details and then click on submit. After that download the ntse application form (in which you will have to fill your basic details and fix your photograph etc). You will have to get the form attested from your principal after which you have to  submit the application form along with the application fee in the Liaison Office. All the best.