
    Write a function that standardizes student identifiers in the attendance tracking system by converting them to lowercase format, ensuring consistent database entries for analyzing student attendance patterns and identifying at-risk behaviors. The function should process any student name or ID string input and return its lowercase equivalent for uniform record-keeping.
    

    
def is_lower(string):
    """
    Write a function that standardizes student identifiers in the attendance tracking system by converting them to lowercase format, ensuring consistent database entries for analyzing student attendance patterns and identifying at-risk behaviors. The function should process any student name or ID string input and return its lowercase equivalent for uniform record-keeping.
    

    """
def is_lower(string):
    """
    Write a function that standardizes student identifiers in the attendance tracking system by converting them to lowercase format, ensuring consistent database entries for analyzing student attendance patterns and identifying at-risk behaviors. The function should process any student name or ID string input and return its lowercase equivalent for uniform record-keeping.
    

    """
    return string.lower()