如何更改Moodle 2.6中的Grading方法下拉列表的值

Thanks in advance,

I have some customer requirements to change Moodle grade into score(literally the keyword).

I've tried to find the Grading method dropdown (present in "moodle/course/modedit.php") in database and the also in the code but unfortunately did't got the solution.

below mentioned is my findings of some presets in moodle\mod\quiz\lib.php

/**#@+
 * Options determining how the grades from individual attempts are 
 combined to give
* the overall grade for a user
*/
define('QUIZ_GRADEHIGHEST', '1');
define('QUIZ_GRADEAVERAGE', '2');
define('QUIZ_ATTEMPTFIRST', '3');
define('QUIZ_ATTEMPTLAST',  '4');
/**#@-*/

and in moodle\mod\quiz\mod_form.php

$mform->addElement('select', 'grademethod', get_string('grademethod', 
'quiz'),quiz_get_grading_options());

need to know where it comes from?

function quiz_get_grading_options() {
    /*
    return array(
        QUIZ_GRADEHIGHEST => get_string('gradehighest', 'quiz'),
        QUIZ_GRADEAVERAGE => get_string('gradeaverage', 'quiz'),
        QUIZ_ATTEMPTFIRST => get_string('attemptfirst', 'quiz'),
        QUIZ_ATTEMPTLAST  => get_string('attemptlast', 'quiz')
    );
    */
    // Commented and added by sherin on 07/05/2019
    return array('Highest score','Average score','First attempt','Last 
attempt');
}   

I've edited the existing return array in the above mentioned function(present in mod\quiz\locallib.php) and it finally worked, do some one know where the actual data is comes from?

 QUIZ_GRADEHIGHEST => get_string('gradehighest', 'quiz')

Hope you guys understand the problem, please help.

Sherin... If I understand your question correctly, I think you need to change the language file that is in the 'lang' directory.

In the path /mod/quiz/lang/ (/en/, /es/,... and so for each language you have installed) there is a php file with all the words that are displayed. If you do not find the files in that route, are probably located in the moodledata.