
    Develop a function to rank students' essays by their assessment scores, where each student's record consists of their ID and corresponding essay score. The ranking should be determined solely by the essay scores, regardless of student IDs, to facilitate fair grade distribution and identify top performers.
    

    
def subject_marks(subjectmarks):
    """
    Develop a function to rank students' essays by their assessment scores, where each student's record consists of their ID and corresponding essay score. The ranking should be determined solely by the essay scores, regardless of student IDs, to facilitate fair grade distribution and identify top performers.
    

    """
def subject_marks(subjectmarks):
    """
    Develop a function to rank students' essays by their assessment scores, where each student's record consists of their ID and corresponding essay score. The ranking should be determined solely by the essay scores, regardless of student IDs, to facilitate fair grade distribution and identify top performers.
    

    """
    subjectmarks.sort(key=lambda x: x[1])
    return subjectmarks