TOEFL Independent Writing, please correct it :)

Topic: People learn things better from those at their own level, such as fellow students or co-workers, than from those at a higher level such as teachers or supervisors.

I believe that it’s better to learn from people at a higher level so I disagree with the statement.
Even though people sometimes have a more friendly relationship with others at their own level, I think that they can learn more effectively from those at a higher level for several reasons.
First, people at a higher level have a better knowledge of the things the people want to learn. For example, snowboarding instructors are usually very skilled snowboarders and, thus, they know (any problems people can face) THE PROBLEMS PEOPLE FACE. When I went to the mountain, I first asked my friend how to (curve) TURN/SWERVE from right to left but he could not help me because he didn’t understand my mistakes. After that, I booked a lesson with a teacher and he explained to me that I was moving my body in (an incorrect) THE WRONG way.
Secondly, people at a higher level are usually expert in teaching. University professors solved a lot of doubts and problems of students. Therefore, they know the most common problems students face and how to solve them. Fellow students DON'T have this expertise. An example that comes to mind is when I was studying for an exam A year ago. I asked an older student, who HAD already (succeeded in that exam) PASSED THE EXAM, to explain an argument TO ME. His explanations were very vague and unclear and after that, I decided to visit the professor during (tuition*) OFFICE) hours. He could explain what I didn’t understand because he knew that A lot of students had problems with that argument.
In conclusion, people at a higher level have a greater knowledge and more experience in teaching. For these reasons, in my opinion, people learn easier from them.

At their own level = equivalent level

At a higher level = more knowledgable

*Not a common term in US English.

Great composition. Excellent use of English. My changes are simple ones for smoothness of speech; nothing wrong with how you had written it.