Science Curriculum for Homeschool: Secular and Christian Options Compared

Science is the most ideologically charged subject in homeschool curriculum selection. The divide between Young Earth Creationist programs and secular evolutionary science programs is stark, and there's no middle ground that satisfies everyone. At the same time, the divide between "good science" and "bad science" — between programs that actually teach the scientific method and scientific thinking versus ones that prioritize worldview over rigor — is equally real.

Here's a clear-eyed comparison of the major homeschool science curricula, with honest assessments of what each does well and where it falls short.

The Core Question: Worldview First

Before comparing programs on rigor, format, or cost, you need to know your family's position on the creation vs. evolution question. This is not a minor theological footnote — it determines whether entire categories of curriculum are viable for you.

Young Earth Creationist (YEC) programs teach that the Earth is approximately 6,000–10,000 years old, that all living things were created as described in Genesis, and that evolutionary theory is incorrect. These programs integrate this worldview throughout science content.

Old Earth or Theistic Evolution programs accept the scientific consensus on the age of the Earth and evolutionary biology while holding a Christian worldview. These are less common than YEC programs in the explicitly Christian curriculum market.

Secular programs teach the scientific consensus on evolution, cosmology, climate, and geology without reference to religious frameworks.

Most homeschool families fall into one of these three camps, and the curriculum market reflects that division clearly.

Christian/YEC Science Programs

Apologia

The dominant Christian homeschool science curriculum. Apologia uses a one-topic-per-year "immersion" approach: Astronomy, Botany, Zoology, Human Anatomy, etc. in elementary; Biology, Chemistry, Physics in high school. Each year is a deep dive into one science domain rather than survey coverage.

Worldview: Explicitly Young Earth Creationist throughout. Science content is framed within a Biblical creation narrative.

Format: Textbook and student journal. Heavily text-based. Lab components are included but require parent sourcing of materials.

Academic character: Well-sequenced within each subject. High school Apologia (Biology, Chemistry, Physics) is considered genuinely rigorous by college admissions standards. Many homeschool graduates from Apologia science go on to STEM degrees.

Cost: Approximately $80–$120 per year for textbook and student journal.

Best for: Christian families committed to YEC science who want an academically serious program with deep content coverage.

The criticism: Heavy on text, lighter on hands-on experimentation than some secular alternatives. The immersion approach means a student who studies Botany in 3rd grade doesn't revisit that subject until high school, potentially leaving gaps in survey knowledge.

Master Books (God's Design for Science)

A lighter, more visual YEC science option for elementary grades. Less text-heavy than Apologia, more colorful and activity-based.

Cost: Approximately $30–$75 per level.

Best for: Families who find Apologia too text-heavy for elementary grades but still want YEC-integrated science.

Noeo Science

Charlotte Mason-style science using "living books" (real books on science topics, not textbooks) and simple experiment kits. Christian worldview, gentle approach. Organized by subject: Chemistry, Biology, Physics.

Cost: Approximately $200+ per kit including books.

Best for: Charlotte Mason families wanting a faith-compatible science option without the textbook-intensity of Apologia.

Secular Science Programs

Real Science Odyssey (RSO)

The most recommended secular homeschool science program for elementary through middle school. Lab-focused, scientifically rigorous, explicitly evolutionary in biology units. Each level is organized around a science discipline.

Worldview: Secular. Teaches evolution, old-earth geology, and scientific consensus throughout.

Format: Lab-based with detailed experiment instructions. Significantly more hands-on than Apologia. Requires parent sourcing of basic lab supplies.

Academic character: Strong. Built around the scientific method. Students learn to form hypotheses, conduct experiments, record data, and draw conclusions — the actual practice of science, not just reading about it.

Cost: Approximately $90–$130 per level for the teacher/student combo.

Best for: Secular families, or Christian families who use secular science and add creation content separately. Particularly strong for families who want their children genuinely prepared for science in college.

BFSU (Building Foundations of Scientific Understanding)

A secular science curriculum organized around conceptual progressions rather than subject disciplines. Instead of "here is chemistry" as a separate year, BFSU teaches interconnected scientific concepts — how chemistry, biology, and physics all connect.

Worldview: Secular. Rigorous scientific consensus throughout.

Format: Teacher-directed. Extremely teacher-intensive — there is no student workbook, only a teacher guide with lengthy conceptual explanations and discussion prompts. This is not an open-and-go program. Parent must read extensively and be comfortable leading conceptual discussions.

Academic character: Exceptionally rigorous conceptually. Children taught with BFSU often develop unusually strong scientific reasoning.

Cost: Approximately $30 per volume (very affordable for the content depth).

Best for: Parents who are scientifically confident and want to teach science through Socratic discussion rather than textbooks. Not suitable for parents who need a structured, scripted program.

Mystery Science (K–5)

An online subscription science program for K–5. Short video lessons (10–15 minutes) with discussion questions, followed by simple experiments using household materials. Aligned with the Next Generation Science Standards (NGSS) used in public schools.

Worldview: Secular. Teaches evolution, geology, and science consensus.

Format: Video-based. Self-contained lessons require minimal prep. Highly engaging for children who prefer visual learning.

Academic character: Excellent for K–5. Not designed for middle or high school — there is no Mystery Science equivalent for older grades.

Cost: Approximately $99 per year.

Best for: Elementary families who want engaging, low-prep science. Frequently used as a supplement alongside another curriculum.

Generation Genius

Similar to Mystery Science — short, high-energy science videos aligned to NGSS standards. Often described as "Bill Nye style" energy. Covers K–8 now with continued development.

Cost: Approximately $175 per year for a home subscription.

Best for: Families who want video-based science that aligns with public school standards, useful if returning to traditional school is a possibility.

High School Science: A Special Consideration

High school science needs to meet a different standard than elementary — specifically, it needs to prepare students for standardized testing and college admission.

For college-bound students, the expectations are: Biology, Chemistry, and Physics in sequential years, with labs, and with a textbook that covers content at the depth required for SAT Subject Tests or AP exams.

Christian families: Apologia Biology, Chemistry, and Physics are college-admissions appropriate. Many university admissions offices are familiar with Apologia transcripts.

Secular families: Real Science Odyssey has high school levels, but for AP-level rigor, many families use actual college-level textbooks (Campbell Biology, Zumdahl Chemistry) with course guides from online sources like Derek Owens.

Online options: Landry Academy, Thinkwell, and other online course providers offer high school science with live or recorded instruction that provides lab documentation for transcripts.

How to Decide

You're committed to YEC science: Apologia (rigorous, text-heavy) or Master Books/God's Design (lighter, more visual).

You're secular or old-earth and want rigorous science: Real Science Odyssey (K–8), then RSO high school or textbook-based courses.

You want hands-on, engaging K–5 with minimal prep: Mystery Science or Generation Genius.

You're comfortable leading discussions and want deep conceptual teaching: BFSU.

Your child is Charlotte Mason style: Noeo Science.

The United States Curriculum Matching Matrix covers every major homeschool science program with worldview tags, format descriptions, lab intensity ratings, grade range, and true cost. If you're trying to compare Apologia versus Real Science Odyssey versus Mystery Science in a single view without clicking through six different publisher websites, that's exactly what the matrix provides. Given that science is the subject where worldview mismatches cause the most curriculum regret, getting this decision right before spending money matters.