Class 12 Indian student living in UAE
Intended major: Comp. Engg.
Grades:
Class 9 CGPA : 9.8
Class 10 CGPA : 10
Class 11 percentage ; 80% (How do I convert to GPA? Should I convert to GPA?)
Class 12 : Barely 60% in midterm exams 
Tests:
SAT: 1490/1600. (M: 760, EBRW: 730 with 34 in Reading)
Essay Scores: 7 ® / 5 (A) / 6 (W)
SAT Subject Tests: Chemistry: 800, Maths II : 730 (I’ll be writing Physics and Maths II this November)
2 really good letters of recommendation from a Maths and Physics teacher.
EC:
Not all that great.Won a lot of quizzes both in school and nationally. Founder of a quiz club in our school with a leadership position.
Member of Operation Smile club in school for a year.
Was an active member on 7cups.com - an online service where you help other people emotionally (Should I mention this?)
Tutored my younger sibling.
Active writer on www.quora.com (Should I mention this too?)
Participated in class and school plays. Won a prize.
Plays chess a lot. (Does that count? How do I write about it?)
Honors:
Received a lot of awards for getting a perfect CGPA in class 10.
High Distinction in Maths, English and Science in IBT (International Benchmark Tests)
83.5% in DELF (Diplôme d’études en langue française) exam - A2 level.
What other universities should I apply to?