def normal_percentile_to_label(percentile):
    """
    Assigns a descriptive term to the MMSE percentile score.
    """
    if percentile >= 98:
        return 'Exceptionally High'
    elif 91 <= percentile <= 97:
        return 'Above Average'
    elif 75 <= percentile <= 90:
        return 'High Average'
    elif 25 <= percentile <= 74:
        return 'Average'
    elif 9 <= percentile <= 24:
        return 'Low Average'
    elif 2 <= percentile <= 8:
        return 'Below Average'
    elif percentile < 2:
        return 'Exceptionally Low'