
    Write a function that validates student learning path identifiers in the school's learning management system by checking if they follow the required format of lowercase subject areas and levels connected with underscores. The function should return true if the identifier follows this format (like "math_advanced_calculus") and false otherwise.
    

    
import re

def text_lowercase_underscore(text):
    """
    Write a function that validates student learning path identifiers in the school's learning management system by checking if they follow the required format of lowercase subject areas and levels connected with underscores. The function should return true if the identifier follows this format (like "math_advanced_calculus") and false otherwise.
    

    """
import re

def text_lowercase_underscore(text):
    """
    Write a function that validates student learning path identifiers in the school's learning management system by checking if they follow the required format of lowercase subject areas and levels connected with underscores. The function should return true if the identifier follows this format (like "math_advanced_calculus") and false otherwise.
    

    """
    patterns = '^[a-z]+_[a-z]+$'
    if re.search(patterns, text):
        return True
    else:
        return False