
    Design a function for the automated grading system that determines the highest possible performance benchmark by rearranging individual assessment scores to form the maximum achievable score. Given a list of single-digit assessment scores from various evaluations, combine these digits to create the largest possible number, which will serve as the upper performance threshold for establishing grading curves.
    

    
def find_Max_Num(arr):
    """
    Design a function for the automated grading system that determines the highest possible performance benchmark by rearranging individual assessment scores to form the maximum achievable score. Given a list of single-digit assessment scores from various evaluations, combine these digits to create the largest possible number, which will serve as the upper performance threshold for establishing grading curves.
    

    """
def find_Max_Num(arr):
    """
    Design a function for the automated grading system that determines the highest possible performance benchmark by rearranging individual assessment scores to form the maximum achievable score. Given a list of single-digit assessment scores from various evaluations, combine these digits to create the largest possible number, which will serve as the upper performance threshold for establishing grading curves.
    

    """
    n = len(arr)
    arr.sort(reverse=True)
    num = arr[0]
    for i in range(1, n):
        num = num * 10 + arr[i]
    return num