While tests arent perfect, then they are at least fair, transparent and almost bias free unlike other methods.
>tends to bias for those who have time and money to prep.
Hmm?
So you have time to do various stuff for grades, but dont have time to prepare for exam?
It feels like copy pasted argument from discussions about exams in general, not when comparing them with grades like we do.
>But if you put them all together one can get a decent picture.
Concrete things, please.
How would you evaluate person.