Undergraduate / "Youth Contact + Roommate Buddy + Good place" - Stanford 3 short essays [11]

I'm writing about environmental protection. I write about a trash sorting program I launched in my community, and I reflect that protecting the environment makes me socially responsible. So I think environmental issues matter to me. Will this be a good topic for me to write?

Undergraduate / "Youth Contact + Roommate Buddy + Good place" - Stanford 3 short essays [11]

Yeah, it has been changed to "What matters you, and why?"
I'm not sure about what it means. Maybe we should talk about a current issue or something else?

Grammar, Usage / Playtime, mom, lions, etc - correct my grammar [5]

1.Correct.
2.I have four family members.
3.I am a silly boy. I like to play tricks on my teachers.
4.Correct.
5.She goes to an elementary school.
6.Correct.
7.I want to go to the beach.
8.I am better
9.It is funny
10.Correct.
11.Correct.
12.Correct.
13.delete "in"
14.I am a shy boy

Grammar, Usage / "the former" - Question about the usage of a sentence. [5]

Yeah, I think none of the three is correct.
I believe it's better to say like this:
The statement that teachers should be paid according to their students' academic performance is misleading.