*/
		return apply_filters( 'llms_student_get_progress', $ret, $object_id, $type, $this->get_id() );

	}

	/**
	 * Retrieve the student's original registration date in the chosen format.
	 *
	 * @since Unknown
	 * @since 5.2.0 Changed the date to be relative to the local time zone.
	 *
	 * @param string $format Any date format that can be passed to date().
	 * @return string
	 */
	public function get_registration_date( $format = '' ) {

		if ( ! $format ) {
			$format = get_option( 'date_format' );
		}

		return wp_date( $format, strtotime( $this->get( 'user_registered' ) ) );

	}