This is the way to do it...Each person starts with 100%...You start of with the bad things they've done and take away points...and then do the positives and add points and see their final grade.
Example) Anjali
Negatives
To stiff...- 4
Was once evilll...-4
Sometimes ignore Atul... -3
and so on.....
Positives
Smart... +4
Great Sis...+4
And so on...
And I would add up the points...in this case she gets a 97%
And be truthful, guys! Not biased!😛