Science isn't a textbook subject. We use lab-style lessons where the kid gets a hands-on prompt, predicts an outcome, runs the test (kitchen science for elementary, real experiments for high school), and writes up what happened.
K-12
Grade range
10
Levels authored
339
Total lessons
1 : 1
Tutor per child
Lab lessons walk the kid through the scientific method: hypothesis, procedure, observation, conclusion. The AI tutor evaluates the writeup against a rubric. Spaced-repetition keeps definitions and concepts live across the year.
Each level contains multiple lessons. The adaptive placement system picks the right starting level for each child — they may start higher or lower than the grade range suggests.
Kindergarten Science
Grades K–K · 26 lessons
1st-2nd Grade Science
Grades 1–2 · 49 lessons
3rd-4th Grade Science
Grades 3–4 · 49 lessons
5th-6th Grade Science
Grades 5–6 · 49 lessons
7th-8th Grade Science
Grades 7–8 · 53 lessons
Biology (9th Grade)
Grades 9–9 · 25 lessons
Chemistry (10th Grade)
Grades 10–10 · 25 lessons
Physics (11th Grade)
Grades 11–11 · 25 lessons
Advanced Science (12th Grade)
Grades 12–12 · 25 lessons
College Science
Grades 13–16 · 13 lessons
Most homeschool science is read-the-chapter, answer-the-questions. Cullinan's lab lessons get the kid actually doing science — which is what makes it stick.
Every child profile in your house gets adaptive placement, daily plans, and real mastery verification — across Science and every other subject. No credit card to start.