One of the small but powerful changes recently has been the addition of your Mastery Scores and your High Scores at the top of the page whenever you are logged in.
This is a very useful addition to help keep you motivated to improve.
It will show your overall score for Thai, and then that value broken down into the your mastery of words and of phrases. Finally, if you are within a lesson, it will show you what your mastery of that lesson is.
Can you beat your high score?