get_posts meta_query example

functions.php

<?php

$posts = get_posts( array(
    'numberposts'	=> -1,
    'post_type'		=> 'student',
    'post_status'   => 'publish',
    'meta_query'	=> array(
        'relation'		=> 'AND',
        array(
            'key'	  	=> 'acf_student_group',
            'value'	  	=> $group_id,
            'compare' 	=> '=',
        ),
        array(
            'key'	  	=> 'acf_student_archived',
            'value'	  	=> false,
            'compare' 	=> '=',
        ),
    ),
));