public static function educational_level_options($any = false) {
        $options = array();
        if ($any) {
            $options['all'] = get_string('any');
        }
        $options[self::HUB_EDULEVEL_PRIMARY] = get_string('edulevelprimary', 'hub');
        $options[self::HUB_EDULEVEL_SECONDARY] = get_string('edulevelsecondary', 'hub');
        $options[self::HUB_EDULEVEL_TERTIARY] = get_string('eduleveltertiary', 'hub');
        $options[self::HUB_EDULEVEL_GOVERNMENT] = get_string('edulevelgovernment', 'hub');
        $options[self::HUB_EDULEVEL_ASSOCIATION] = get_string('edulevelassociation', 'hub');
        $options[self::HUB_EDULEVEL_CORPORATE] = get_string('edulevelcorporate', 'hub');
        $options[self::HUB_EDULEVEL_OTHER] = get_string('edulevelother', 'hub');
        return $options;
    }