
    In a school's early intervention system, you need to identify the student most at risk of dropping out by finding the student ID associated with the lowest risk assessment score from a list of student-risk score pairs. Each pair contains a student's unique identifier and their calculated risk score, where lower scores indicate higher dropout risk.
    

    
from operator import itemgetter

def index_minimum(test_list):
    """
    In a school's early intervention system, you need to identify the student most at risk of dropping out by finding the student ID associated with the lowest risk assessment score from a list of student-risk score pairs. Each pair contains a student's unique identifier and their calculated risk score, where lower scores indicate higher dropout risk.
    

    """
from operator import itemgetter

def index_minimum(test_list):
    """
    In a school's early intervention system, you need to identify the student most at risk of dropping out by finding the student ID associated with the lowest risk assessment score from a list of student-risk score pairs. Each pair contains a student's unique identifier and their calculated risk score, where lower scores indicate higher dropout risk.
    

    """
    res = min(test_list, key=itemgetter(1))[0]
    return res