
    Write a function that validates student learning module identifiers in the adaptive learning system by checking if they follow the required format of lowercase letters connected by underscores. The function should return true if the module identifier is properly formatted (like "basic_algebra" or "intermediate_calculus") and false otherwise, ensuring consistent data organization across the learning management system.
    

    
import re

def text_lowercase_underscore(text):
    """
    Write a function that validates student learning module identifiers in the adaptive learning system by checking if they follow the required format of lowercase letters connected by underscores. The function should return true if the module identifier is properly formatted (like "basic_algebra" or "intermediate_calculus") and false otherwise, ensuring consistent data organization across the learning management system.
    

    """
import re

def text_lowercase_underscore(text):
    """
    Write a function that validates student learning module identifiers in the adaptive learning system by checking if they follow the required format of lowercase letters connected by underscores. The function should return true if the module identifier is properly formatted (like "basic_algebra" or "intermediate_calculus") and false otherwise, ensuring consistent data organization across the learning management system.
    

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