Can I raise my 3.6 GPA to 3.9/4.0 by senior year of high school?

I am currently a sophomore in high school and I have a 3.6 GPA. If I maintain all A’s throughout the four quarters, this year and in my junior and senior year, will I be able to raise my GPA to a 3.9 or 4.0?

That’s a simple arithmetic question. In theory, yes. But it would be stretch (although not impossible) to go from a 3.6 freshman year to all A’s for 3 years.