A Beginner’s Guide To 1st Year High School Science Subject

If you are planning your freshman’s 1st year high school science subjects you are in the right place for loads of great information and resources. And look at my page How to Choose the Right Homeschool High School Science for more fun teen ideas

Starting high school science at home can feel both exciting and intimidating. Ninth grade marks the transition from middle school’s broad, general science into deeper, more formal studies.

This is where students begin learning science in a structured way with labs, textbooks, and connections to math and critical thinking.

Because you’re homeschooling, the good news is that you don’t have to do it exactly like a public school.

You can choose the path that fits your student’s interests, abilities, and future plans, while still giving them a strong academic foundation.

The first year of high school science is about building a foundation, not perfection. Whether your homeschooler starts with Biology, Physical Science, or Earth Science, the goal is to nurture curiosity, critical thinking, and confidence. 

With the right balance of structured lessons and hands-on exploration, your student will be well-prepared for Chemistry, Physics, and advanced sciences in the years to come.

MORE HOW TO CHOOSE THE RIGHT HOMESCHOOL HIGH SCHOOL SCIENCE

WHAT MAKES HIGH SCHOOL SCIENCE DIFFERENT

High school science is usually taken in a 3- or 4-year sequence, often beginning with Biology.

Colleges expect to see at least three lab sciences on a transcript: Biology, Chemistry, and Physics. Some students also add Earth Science, Environmental Science, or Anatomy.

I have put together a beginner’s guide to 1st year high school science for homeschoolers.

I’ve included course options, typical topics, and helpful tips for making science engaging and doable at home, whether you are looking for the basics, family style, or advanced.

The first year sets the tone. It teaches students how to write lab reports, use scientific vocabulary, and connect science with real-world problems.

More importantly, it helps them gain confidence for the harder courses that come later.

• Moving into high school science comes with a few big changes:
• Critical Thinking & Application – The focus shifts from memorization to analysis, reasoning, and problem-solving.
• More Formal Labs – Students should learn to follow lab procedures, record results, and write reports.
• Math Skills Matter – While Biology requires less math, Physical Science and Chemistry rely on equations.
• Textbooks or Online Curriculum – Students begin reading and learning from structured resources.

COMMON 9TH GRADE SCIENCE OPTIONS

 (The most common choice)- Biology is the study of life in all its forms, from tiny bacteria to giant ecosystems.

BIOLOGY

Most schools (and many homeschoolers) choose this as the 9th-grade science course because it doesn’t require advanced math skills.

Suggested Biology Curriculum:

• Real Science Odyssey: Biology
• Master’s Class High School Biology Set

Topics Covered in Biology:

• Cell Biology- Learning the structure and function of cells, DNA, and organelles.
• Genetics- How traits are passed on, Punnett squares, DNA replication, and mutations.
• Evolution & Classification- How species change over time and how organisms are grouped.
• Plants & Photosynthesis- Plant systems and how they make food using sunlight.
• Human Anatomy & Physiology- Overview of the body’s systems and how they work together.
• Ecology- Relationships between organisms, food chains, and environmental impact.
• Lab Work- Microscopy, osmosis, DNA extraction, and optional dissections.

* If dissections aren’t appealing, many curriculum providers offer virtual labs, detailed diagrams, or alternatives using models.

PHYSICAL SCIENCE

Physical Science introduces students to basic physics and chemistry concepts.

Some families choose this as a steppingstone before moving into Biology, Chemistry, and Physics, going more in depth than they did in elementary.

Suggested Physical Science Curriculum

• Advanced Physical Science
• Journey Homeschool Academy: Physical Science

Topics Covered in Physical Science:

• Matter & Atoms – Building blocks of matter, atomic structure, and molecules.
• The Periodic Table – How elements are organized and why their properties matter.
• Forces & Motion – Newton’s laws, gravity, and everyday applications like cars and sports.
• Energy – Heat, electricity, magnetism, and conservation of energy.
• Waves & Sound – The science of light, sound, and wave properties.
• Intro to Chemistry – Simple reactions, acids and bases, balancing equations.

*This course pairs well with lots of hands-on activities—baking soda and vinegar reactions, balloon rockets, homemade electromagnets, and simple circuits.

EARTH & SPACE SCIENCE

Earth Science can also serve as a 9th-grade option, especially for students interested in astronomy, geology, or environmental studies.

Suggested Earth & Space Curriculum

• Layers of Learning- Earth and Space
• General Science 1: Survey of Earth & Sky

Topics Covered in Earth Science:

• Earth’s Structure – Layers of the Earth, plate tectonics, earthquakes, and volcanoes.
• Rocks & Minerals – Identifying rocks, understanding the rock cycle, and practical uses of minerals.
• Weather & Climate – Clouds, storms, air pressure, and climate change basics.
• Oceans – Tides, currents, and marine ecosystems.
• Astronomy – Solar system, stars, galaxies, and space exploration.
• Environmental Science – Human impact on ecosystems and sustainable living.

*Earth Science is a fantastic choice if you enjoy outdoor learning. Rock hunts, stargazing, weather journals, and local field trips make this subject come alive.

Finally, look at these general tips.

FIRST YEAR HIGH SCHOOL SCIENCE TIPS

• Keep Records- Save lab reports, quizzes, and grades to build a strong transcript
• Pick the Right Starting Point- Biology is the most common, but if your student struggles with reading-heavy material, starting with Physical Science might be better.
• Don’t Stress About Labs- Simple kitchen science, microscope kits, or online virtual labs count! Keep lab notebooks as part of your transcript.
• Encourage Independent Learning- High school teens should begin taking responsibility for reading, note-taking, and managing assignments.
• Use Resources Beyond the Textbook- Documentaries, YouTube science channels, podcasts, and local science museums make learning engaging.