public function get_status_icon() {

		$icon = '';

		switch ( $this->get_status() ) {

			case 'graded':
				if ( $this->is_correct() ) {
					$icon = 'check';
					$tip  = esc_attr__( 'Correct answer', 'lifterlms' );
				} else {
					$icon = 'times';
					$tip  = esc_attr__( 'Incorrect answer', 'lifterlms' );
				}
				break;
			case 'waiting':
				$icon = 'clock-o';
				$tip  = esc_attr__( 'Awaiting review', 'lifterlms' );
				break;

		}

		if ( $icon ) {
			return sprintf( '<span class="llms-status-icon-tip tip--top-left" data-tip="%1$s"><i class="llms-status-icon fa fa-%2$s"></i><span>', $tip, $icon );
		}

		return '';

	}