Am I well on track?

<p>Hello!</p>

<p>I'm an international junior high school student from Brazil. As I haven't taken any SATs (should I start taking them by now?) I would like you guys to give me some thoughts on my ECs and course marks. Are they good for Cornell and other Ivys? If not, how can I prepare myself as an applicant? With more activities, or more leadership roles within those ones?</p>

<p>ECs:
- I'm in the school environmental group for sustainable development
- Participated numerous times in the annual school simulation of the United Nations congresses
- Co-founded a start-up company designed to virtually share summaries of the school subjects and improve students' marks
- Was the director of a movie for the Cinema class (Is this even significant?)</p>

<p>Marks (for 10th grade as I'm just starting my 11th grade):
- Portuguese - 94
- Writing - 97
- Literature - 94
- Cinema - 88
- English- 95
- Spanish - 92
- Math - 97
- Chemistry - 94
- Physics - 97
- Biology - 98
- History - 94
- Geography - 93
- Philosophy - 97
- Sociology - 100</p>

<p>Here in Brazil there isn't any AP our honours courses. Everybody has to take the same classes.</p>

<p>Thanks for the help everyone!!</p>