Hello Niddhi,
In my case, I have sent certified copies of:
- High school end of studies certificate
- High school end of studies grades transcript
For each academic year at university, certified copies of:
- grades transcript
- certificate of achievement
And of course the certified copy of your diploma(s).
I also recommend that you download the pdf from the WES and have your university administration fill in all the necessary information ( after you fill in your part of course)
https://applications.wes.org/onlineapp/pdf/International_Transcript_Request.pdf
I hope this is helping.
Regards
Gaius