Score Module
If you set is_scorable in install.yaml to ‘yes’, a score module will be required. Drop src/_score/score-module.php in your source code and customize it as needed.
The score_module.php file is a PHP class which extends Score_Module.  Your score module should override the checkAnswer method.  Your implementation of this method should return a number of 0-100 representing the score for the given question response.  The $log object contains any data saved to the server by your widget (usually question or performance data).
Basic score module example
<?php
namespace Materia;
class Score_Modules_MyWidget extends Score_Module
{
	public function check_answer($log)
	{
		if (isset($this->questions[$log->item_id]))
		{
			$question = $this->questions[$log->item_id];
			foreach ($question->answers as $answer)
			{
				if ($log->text == $answer['text'])
				{
					return $answer['value'];
					break;
				}
			}
		}
		return 0;
	}
}
This example uses Score_Module’s questions property which contains a reference to this widget instance’s qSet.
Look at the
Score_Moduleclass in Materia for all of the properties available to you.