Also, probably the most important and easy thing to fix, is to show that a course has been completed and not just mastered. I know that Khan Academy want to keep things simple but this is inaccurate and unfair.

Tying course completition to mastery is discouraging. It makes the student feel that their work is incomplete. There could be one metric to show the status of the course content, i.e. videos watched and tests taken, and another to show the level of mastery.

Thank you for saying this, couldn't have said it better!.

Nah it's not a requirement to get 100% to move on, the way i've been doing it is i don't aim to be perfect and i just gather the information i need for each concept and then i go onto practicing, then i fill in any gaps i didn't see before properly practicing because you don't see everything until you actually put it into practice.

I use the Hints as much as possible too i know it gets 1 wrong but most likely i'm going to get most or half of the questions wrong the first time i do them anyway lol so i make sure to look at the Hints most of the time when i go to look at the Practise Questions so i can see what it's asking and how it's worded, and usually it's not clear what it's asking me to do at first.

I learn the process i need to Master so then when i go back to practicing i guess i get the gist of what it's asking (even if i wouldn't have worded it like that), i know what to do so i just draw from the instructions, not the question exactly, so from that i can translate what the question means in my own understanding.

I don't do the Unit Tests either cos if you get 1 wrong you have to do it all over again and you could just lose concentrate and boom wrong lol it's not useful and i do lose concentration easily, i think it's better to just get each Concept to Proficient, but you have to practice first before you fully go into doing them it's not effective totally relying on the Practise Questions and doing them over and over again in the hopes you'll understand it you have to do your homework and figure out what it all means and how to do it first before you're confident you can do the Practise Questions.

So my Unit Scores aren't 100% and i'm totally okay with that because the main aim is to Master each Concept and learn it properly not focusing so much on scores and honestly The Education System is too about that and we need to break away from that asap, the Mastery System is flexible enough to allow you to just put total focus on the Concepts not the Score.

Thanks Emma. Great reply.