Let us assume that a professor is handling a course on statistics for undergrads.
They conduct exams and evaluate the answers and award marks to the students.
Suppose that the professor committed some mistakes, unknowingly, during the evaluation of a student's answers in one of the exams, and as a result, there is an error in the final grade of the student in statistics, and it is not noticed by anyone, including the student.
If the student realizes the mistake done by the professor in the next semester, then is the professor still responsible for the mistake that was committed? Or is the professor not responsible for their actions since the student was calm throughout the semester?
If the professor is responsible, then what is the action they need to do if the administration does not allow to edit the grades after freezing them?
Assume that the professor distributes the answer sheets after their evaluation for clarifying doubts of students regarding her evaluation. And the student can approach them at that time in case of any issues i.e., wrong marking.