public static function get_edulevel_string($edulevel) {
        switch ($edulevel) {
            case \core\event\base::LEVEL_PARTICIPATING:
                return get_string('participating', 'report_eventlist');
                break;

            case \core\event\base::LEVEL_TEACHING:
                return get_string('teaching', 'report_eventlist');
                break;

            case \core\event\base::LEVEL_OTHER:
            default:
                return get_string('other', 'report_eventlist');
                break;
        }
    }