def skewed_percentile_to_label(percentile):
    """
    Assigns a descriptive term to the MMSE T-score based on its degree of skewness.
    """
    if percentile > 24:
        return 'WNL'
    elif 9 <= percentile <= 24:
        return 'Low Average'
    elif 2 <= percentile <= 8:
        return 'Below Average'
    elif percentile < 2:
        return 'Exceptionally Low'