public function can_be_manually_graded() {

		$question = $this->get_question();

		if ( $question && $this->get( 'points' ) >= 1 ) {

			// The question is auto-gradable so it cannot be manually graded.
			if ( $question->get_auto_grade_type() ) {
				return false;
			} elseif ( $question->supports( 'grading', 'manual' ) || $question->supports( 'grading', 'conditional' ) ) {
				return true;
			}
		}

		return false;

	}