I’m sorry you are so far behind in math and science. I am confused as to what yr you are and exactly how you have been following Seton.
I know many high achieving, extremely successful young adults who were educate exclusively using Seton. Seton’s high school sequence includes math to calculus. http://www.setonhome.org/high-school-course-guide/mathematics-courses/ And they also offer chemistry and physics. http://www.setonhome.org/high-school-course-guide/science-courses/
Students who complete Seton’s high school materials as enrolled students earn an accredited diploma. When they apply to college, they can apply as graduates of Seton, an accredited private school.