How did your academic profile look in high school? Grades and engagement in school? Did you get any scholarships?
You might want to look through the Rice RD discussion thread for this year -
The admissions results start around page 18. Check the rest of the Rice message threads for more information.
Most admitted students from our district were admitted to other top 20 schools as well so you can guess strength of their resume. Two were not top students but still had decent resume, they believe their biggest strength was demonstrated interest. They visited campus, emailed admission officers, made a video about school, wrote insightful essays, genuinely showed their interest and will to work for it.