Firstly God will judge according to our knowledge.
What about our justification for holding something as knowledge in comparison to false knowledge? Will God consider what I know about archaeology and admit that God's own method of communication failed due to being so flawed? Knowledge we claim to hold is irrelevant compared to the methods and reason for claiming knowledge.
Everyone has a sense of right and wrong and every has a conscience. If you live contrary to your own conscience doing things you know are wrong then you will fail your exam. And I think this line of thinking is quite consistent throughout most if not all religions. There aren't too many religions you can run to that will justify sleeping with another man's wife.
Here is the problem. God endorsed views I oppose (in specific religions). Thus I consider something evil that God considered good. We have a conflict here. If my internal moral compass is to be followed a number of supposed Gods are evil. After all you said I get to follow my own conscious rather than the dictates of primitives from the bronze age. Many religions claim I need to accept these dictates otherwise I am screwed. If these dictates are not important then these religions offer me nothing, as per following my own moral compass.
What happens if I have a warped sense of morality. What if I thought slavery was good not evil. Will I be judged as a good person for following a moral compass God and most modern people disagree with? Do my horrible acts of say enslaving someone turn into a moral one because I believed it was right?
Your first point has been addressed.
No it hasn't as a university does not allow for subjective answers for test. I can not answer 1+1=3 because I believe that it is right. Whereas you just put forward that my own moral compass is my guide. The university example is objective while your moral example is subjective. Your answer only shows you answer in an irrational manner, nothing more.
On your second point - it would actually be more like different universities having different registration procedures and qualifying criteria. There is every possibility Harvard could reject a perfectly valid Yale application
Yet I will still receive a program which is accredited by almost all universities where as religion has no such view. I can just go to Yale and had proper certification as if I were at Harvard. Only a nutcase would decline a certified expert in X if they were educated at Yale rather than Harvard. Individual merit matters when programs are accredited. There are also reason for rejection of application which can be challenge, at the very least known to the application. There is also an administration I can contact yet your administrator (God) has been out to lunch for centuries while taking no appointment, ever. More so if other programs are acceptable then other religions are also acceptable. Which makes Christianity no more special than any other religion. More so if I still follow my own moral compass then all religions are useless. As you said my own moral compass is enough.
And God communicates with us by the power of the Holy Ghost.
Useless religious rhetoric. My Ghost told me you are wrong and Christianity is false. You have nothing to say that can counter this as it is equally a useless bit of sophistry put forward as an answer.
You just used relativism to defend God but in doing so you make God subjective according to everyone's individual view.