Maybe most who read this want dc to cover higher level math and science for college purposes. In the case of my 2 oldest dc who are already graduated, they did some algebra, but they decided they wanted to go to more of the business math. DS did consumer math and accounting. DD did consumer math and business math. Abeka's consumer math is great. That is 10th grade level.
As far as science, dd was really interested in environmental science. She was involved in Envirothon, which is a competition in environmental science between public schools, Christian schools and homeschoolers from certain counties. They made teams and competed in areas like tree identification, soil, aquatics, wildlife and more. My daughter was on our homeschool team for a number of years and loved it. She really enjoyed that type of science. So, one year, for one of her high school credits, she did strictly environmental science. We just added more reading and writing in the areas the team was studying. By the way, our homeschool group has won the overall competition several years (against many public schools). I heard they won again this year.
Depending on your dc's pursuits, there are other ways to gain high school credits. I thought my ds would pursue something in history or business, but he ended up becoming a preacher

My dd(20) with spina bifida worked at a remedial level and basically got credits in general science courses and math courses. There are Christian colleges that do not require all of the higher level math and science if the degree does not require it. So, if desired, there are alternatives. Like a pp said, you could use the science in HOD and just beef it up with more reading and writing. My evaluator, with very much teaching experience in high school level, said, as long as the child is progressing, it counts. HTH
I have no greater joy than to hear that my children walk in truth. III John 4
Pam
dh 33 yrs
ds29 church planter in MA
dd27 SAH mom
dd26
dd 12
3 dgs(5,2, & born 6/15) & 2 dgd(3 & born 2/15)