Exams and beyond

Hi there! I am a mother of a 1 year old little girl, and very keen to homeschool her with a Christian emphasis. I love the SCM philosophy, but I have very traditional parents and in-laws, and I need to answer lots of questions! Most importantly – which exam syllabus (if any?) does SCM offer? We live in Zimbabwe where children do the IGCSE (British) system. By choosing SCM, will I in any way be limiting my child’s opportunity for university acceptance/higher education?
Any input would be gratefully received!

Thanks,
Amy