Chance Me for SCEA?

Currently I’m a junior attending a school in Texas with around 1375 students in my grade.
I’ve taken 9 AP courses and have gotten or will get 5s on all AP exams, but I’m taking 9 more senior year, so I will finish with 18 AP courses.
I’m also ranked in the top 1.25% (top 17 students) of my school and on the November 2015 SAT, I received a score of 2390.
800 - Math
800 - Writing
790 - Reading

SAT Subject Tests:
I’ve taken two SAT IIs so far. I have yet to take my junior SAT IIs as I plan to take those in June after AP exams.
World History - 800
Math Level II - 800
Anticipating 800 in US History and 750+ in Physics and Literature

So far, these are my extracurricular and curricular achievements and deeds:

National Spanish Exam Gold Medal
National Merit Semifinalist (Highly Probable) and later Finalist
National AP Scholar (Guaranteed)
3rd Place at Junior World Affairs Council (JWAC) World Quest Nationals
NAQT Quiz Bowl State Qualifier
National Economics Challenge Texas Representative
Business Professionals of America (BPA) Nationals Qualifier in Banking and Finance
BPA Ambassador Award
BPA Statesman Award
Hugh O’Brian Youth Leadership School Finalist
Pan American Student Forum (PASF) (Spanish Competition) awards
Texas PTA Reflections Award
Member of the Congressional Youth Advisory Council for Congressman Sam Johnson
Local Teen Court Juror
Texas Junior Historian at-large

Now, the following is a list of leadership positions that I have held or currently hold in school and in the community:

President of Key Club
President of Economics Club
Co-Captain of the Quiz Bowl Team
Vice-President of Junior World Affairs Council
Treasurer of Dancing for a Cause
Treasurer of Environmental Club
Next year, I hope to be either Vice-President or President of NHS as those require senior leadership.

Finally, my volunteer work and professional work experience is listed below.

President’s Volunteer Service Award - Bronze
Prudential Spirit of Community Award Candidate
300+ hours of volunteer work since entering high school
Certified volunteer at two private food pantries
Organizer of monthly Parks Cleanup and Recycling Program at my school
Summer volunteer at Baylor Hospital Services
Summer intern at local IT company

Also, some information about myself:

I’m a naturalized Indian American.
I have no legacy at Harvard.
I want to major in economics with the goal of becoming an investment banker and transitioning to Wall Street.

Please take a look at this post from an MIT Admissions Director on chance posting, as everything in it applies to Harvard as well: http://talk.collegeconfidential.com/massachusetts-institute-technology/939227-reminder-no-one-not-even-me-can-give-you-an-accurate-chance-at-mit-p1.html

You seem like a wonderful candidate, as are the thousands of other students who apply and are rejected. As Harvard receives more applications from qualified applicants than they have seats in the freshman class, Admissions uses a student’s essays, teacher recommendations, guidance counselor report (SSR) and interview report to select one high-performing student over another. As you haven’t posted that information (nor should you), the most anyone can say is that your test scores and GPA make you a qualified applicant. Beyond that, it’s anyone’s guess. Best of luck to you!