[smurfgirl]

I would not worry about this. Most universities are looking at the full picture of who the applicants are as people, what makes them tick, what they might contribute to the campus, and whether they would be able to thrive at the school. It is not just a question of who has the highest combination of GPA and SAT/ACT score, and schools do recognize how different weighting systems can effect weighted GPAs.

I would focus your energy on taking classes that interest and challenge you at a level that is manageable to you. Make the most of the opportunities and resources you have available to you.

If you are interested in going into the STEM fields, having hands-on experience like robotics will reflect well on you when you apply to college, scholarships, internships, and careers. Don't worry about it's effect on your weighted GPA.