public function calculate_grade() {

		$status = 'pending';

		if ( $this->is_auto_gradeable() ) {

			$grade = llms()->grades()->round( $this->get_count( 'earned' ) * $this->calculate_point_weight() );

			$quiz      = $this->get_quiz();
			$min_grade = $quiz ? $quiz->get( 'passing_percent' ) : 100;

			$this->set( 'grade', $grade );
			$status = ( $min_grade <= $grade ) ? 'pass' : 'fail';

		}

		$this->set_status( $status );

		return $this;

	}