AISSEE Answer Key, OMR Sheet 2021 released: See steps to raise challenge AISSEE Answer Key, OMR Sheet 2021 released: See steps to raise challenge AISSEE answer key and OMR sheet 2021 has been released by the National Testing Agency. advertisement AISSEE answer key 2021 has been released by the National Testing Agency. HIGHLIGHTS Candidates can visit the official website, aissee.nta.nic.in to download AISSEE 2021 provisional answer keys Candidates can raise any challenge regarding the answer key and OMR sheet online. AISSEE answer key 2021 has been released by the National Testing Agency along with candidates’ OMR responses on March 4. Candidates can visit the official website, aissee.nta.nic.in to download AISSEE 2021 provisional answer keys and OMR responses that will be made available on the official website from tomorrow, March 6, 2021.