
    In a personalized learning system, develop a function that determines the next balanced milestone score for a student given their current achievement level, where a balanced milestone is defined as a number that reads the same forwards and backwards to ensure symmetric skill development. The function should take the student's current score as input and return the next possible balanced milestone that is greater than their current score.
    

    
import sys

def next_smallest_palindrome(num):
    """
    In a personalized learning system, develop a function that determines the next balanced milestone score for a student given their current achievement level, where a balanced milestone is defined as a number that reads the same forwards and backwards to ensure symmetric skill development. The function should take the student's current score as input and return the next possible balanced milestone that is greater than their current score.
    

    """
import sys

def next_smallest_palindrome(num):
    """
    In a personalized learning system, develop a function that determines the next balanced milestone score for a student given their current achievement level, where a balanced milestone is defined as a number that reads the same forwards and backwards to ensure symmetric skill development. The function should take the student's current score as input and return the next possible balanced milestone that is greater than their current score.
    

    """
    numstr = str(num)
    for i in range(num + 1, sys.maxsize):
        if str(i) == str(i)[::-1]:
            return i