For migrating to Canada through the Federal Skilled worker Express Entry, does both spouse need to have their certificate evaluated or just the principal applicant?

The deceased great great grand papa

Is this still on nii?

Only the Principal Applicant MUST do the evaluation, the spouse's own is just to get a little additional marks.

Meanwhile, i dont see why you have to open a thread for this when there's a general purpose thread for Canadian Immigration that has been opened already.

Guys on this thread, I appreciate you all. Please, I am writing this to get some clarifications. I quite understand that an applicant gets points for his/her highest qualification and this fact made me to send only my M.Sc documents to WES for assessment
but a friend told me again that my B.Sc degree
too must be assessed in order not to be denied a PR visa in future. Please, is it a must I get the B.Sc assessed to avoid rejection in the future? Or my M.Sc degree is enough since its my highest qualification.
I need responses because I'm seriously confused. Thanks everyone.

Thanks for the great information out here. I am checking to confirm if WES would accept statement of result in place of certificate as I am yet to collect the latter from my school?