CBSE announced to declare class 12th Results on 28th May 2017.
you can check your results at below sources:
Can be checked via digilocker, the DigiLocker account details will be sent to students on their mobile number registered with CBSE.
Dial 011-24300699 or 011-28127030 and follow the instructions to get your Class 12 result.
Class 12 results of the students will be sent to schools by CBSE via email as soon as they are announced. Students can check with their respective schools.