Homeschool Data · 9th Grade

What Science Do 9th-Grade Homeschoolers Take?

Across 66,930 ninth-grade science courses on homeschool transcripts, freshman science splits two ways: Biology (27%) and Physical Science (25%). Biology-first is the college-prep lab track; Physical Science is the common foundation year.

Methodology. Based on 66,930 science courses listed for 9th grade across homeschool transcripts created with Fast Transcripts. Titles were classified by subject and common variants merged (for example "Science: Physical" with Physical Science). Computer Science and computer-applications courses were not counted as science. Figures reflect our customer base, which skews college-bound. Updated July 2026.

The most common 9th-grade science courses

CourseShare 
Biology27%
Physical Science25%
Earth Science8%
General Science7%
Chemistry2%
Environmental Science1%
Other science courses~30%

What the numbers mean

Two freshman paths split almost evenly. Biology (27%) is the accelerated, college-prep choice; Physical Science (25%) is the common foundation year taken before Biology. Earth Science and General Science round out the foundation options.

The college-expected core is three years of lab science: Biology, Chemistry, and Physics. Starting with Biology in 9th keeps a student on pace to finish all three by 11th and add a fourth science in 12th. A Physical Science start is fine, but it pushes the lab sequence back a year.

A note on Computer Science. A Computer Science course can count toward a college's science or math requirement, and the NCAA counts an approved Computer Science course toward its core if the high school awards credit for it. Computer-applications or keyboarding courses do not count, and Computer Science is not a lab science, so it complements rather than replaces Biology, Chemistry, and Physics.

Frequently asked questions

What science do 9th graders take?

Most commonly Biology or Physical Science. Biology-first keeps a student on the college-prep lab-science track toward Chemistry and Physics.

Is Physical Science a good 9th-grade science?

Yes, as a foundation year, but colleges look for three years of lab science (Biology, Chemistry, Physics), so plan the sequence so all three fit.

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