No, 

you don't required the school ID at the time of JEE MAINS Exam.

Thanks

Hey Sivaramakrishnan Jaganathan,

For Jee Mains exam all you need to carry is only your admit card! Further for any reference if any invigilator asks for that reference you need to carry your aadhar card! 

Don’t carry any tensions with you! All just you need to carry is admit card and aadhar card! 

All the best for your exam!

Hi Sivaramakrishnan,

For jee mains exam, jee mains admit card is enough.

Although you can carry your school id or adhar id as your id proof

Yes, adhar card is more than enough for jee main and no need to carry any other varification document with yourself. School Id isn't a valid varification document so it can't help. 

Good Luck!!