List Students

// WP_User_Query arguments
$args = array(
	'role'           => 'Subscriber',
	'search'         => '$search',
	'search_columns' => array( 'user_login' ),
	'number'         => '50',
	'meta_query'     => array(
		'relation' => 'OR',
		array(
			'key'     => 'meta_key',
			'value'   => 'first_name',
			'compare' => 'LIKE',
		),
	),
	'fields'         => 'all_with_meta',
);

// The User Query
$user_query = new WP_User_Query( $args );