
    Create a function that generates a single-letter risk indicator for students by processing their combined performance metrics string, where the letter is determined by summing the ASCII values of all characters in their metrics string and taking modulo 26 of the result. This risk indicator will serve as a quick reference code in the early dropout prediction system.
    

    
def get_Char(strr):
    """
    Create a function that generates a single-letter risk indicator for students by processing their combined performance metrics string, where the letter is determined by summing the ASCII values of all characters in their metrics string and taking modulo 26 of the result. This risk indicator will serve as a quick reference code in the early dropout prediction system.
    

    """
def get_Char(strr):
    """
    Create a function that generates a single-letter risk indicator for students by processing their combined performance metrics string, where the letter is determined by summing the ASCII values of all characters in their metrics string and taking modulo 26 of the result. This risk indicator will serve as a quick reference code in the early dropout prediction system.
    

    """
    summ = 0
    for i in range(len(strr)):
        summ += ord(strr[i]) - ord('a') + 1
    if summ % 26 == 0:
        return ord('z')
    else:
        summ = summ % 26
        return chr(ord('a') + summ - 1)