Substitute Teacher

You heard of two students who transferred from anther country. Rumour has it, they're from Korea. Others say they're from Japan. You havent seen them so you dont know for sure. Word around the school is that your fourth period teacher has passed away because he hasnt been seen in two weeks. The school is struggling to find a permanent replace ment and substitutes are scarce. So the school has resorted to the last choice. Picking the student with the highest GPA to take over the class.

Guess who it is?