
    Design a function for an adaptive learning system that arranges student subject records based on their performance scores, where each record contains both the subject name and score. The system needs to organize these records in ascending order of scores to determine appropriate difficulty levels for future lessons and identify areas requiring additional support.
    

    
def subject_marks(subjectmarks):
    """
    Design a function for an adaptive learning system that arranges student subject records based on their performance scores, where each record contains both the subject name and score. The system needs to organize these records in ascending order of scores to determine appropriate difficulty levels for future lessons and identify areas requiring additional support.
    

    """
def subject_marks(subjectmarks):
    """
    Design a function for an adaptive learning system that arranges student subject records based on their performance scores, where each record contains both the subject name and score. The system needs to organize these records in ascending order of scores to determine appropriate difficulty levels for future lessons and identify areas requiring additional support.
    

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