<human>: Can you provide a brief rundown of the text in within 3 sentences?

Here's some context/backstorry

A good friend of mine was born in South Korea and moved to The USA when she was 7. She learned English only from experience and had no formal education in it. We met, three years ago, near the start of our freshman year of high school. After our sophomore year she moved back to South Korea. When we met, her English seemed to me to be perfect.  Having had conversations with her in the past couple of days this holds true.

We were just having a chat when the subject of curriculum came up and she said that she often missed test questions in her mandatory English class because the teacher and author of the test was not a fluent or native English speaker. When I asked her If she could appeal her test she said this:

(this is from Facebook chat, I have decided to keep the formatting the same for the purpose of an accurate reproduction of what she said)
"I appeal  
but then it's also a very heirarchical system  
and if I say that "this question seems wrong to me"  
that's the equivalent of saying "I am challenging the authority of the teacher who wrote this question. I am disrespecting him"  
so I have to be ULTRA careful about it  
and usually that's why the teachers just deny my appeal  
they're like "you know, I don't know how you guys do it in America, but that's not proper english, this is proper english"
<bot>: a friend who speaks English fluently is losing points on highschool tests because of poor question quality and cannot appeal due to the structure of the Korean school system and culture.