PhysicsGraph

What Reviewers Say

PhysicsGraph is a newer adaptive physics platform from Lemnisket Inc., founded by Chris Sutherland (Physics PhD, former USC lecturer). It uses text-based lessons with animations, spaced repetition, and AI-graded free-response questions rather than the traditional video-lecture model common in homeschool physics. The platform covers AP Physics 1 and 2, College Physics I and II, conceptual and algebra-based high school physics, high school chemistry, and AP Chemistry. Parent reviews are limited given its relative newness in the homeschool market. The adaptive approach and knowledge-graph pedagogy are promising, but the platform lacks the long track record of established competitors like Physics Prep or Derek Owens.

How It Works

Students work through physics concepts via text-based lessons with animations and diagrams. The platform adapts difficulty based on performance using spaced repetition algorithms. Free-response questions are AI-graded for immediate feedback. Sessions are self-paced, with each lesson designed for 5-15 focused minutes. Parents monitor progress via a dashboard but do not teach or grade.

Switching to This?

A diagnostic test maps what the student already knows so they can skip mastered material. Students can begin at foundational concepts. Math prerequisites vary by course level: conceptual courses need 4th-6th grade math, and algebra-based courses such as AP Physics 1 need Algebra 1 and some trigonometry. The self-paced format allows mid-year starts.

Curriculum Details

Price

$299 - $599/year

Core plan $299/year ($25/month equivalent) with access to all courses. Test Prep plan $599/year ($50/month equivalent) or $99/month, adding AI-graded free-response questions and a score guarantee. Family Mode puts multiple learners under one bill. 7-day free trial and 14-day refund policy.

Grades

9 - 12

Available As

Digital Internet required

Coverage

Single subject

Subjects

Science

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Pacing

Self-paced

Parent Time

0-5 min/day

Student Independence

Fully independent

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Academic Level

Advanced

Worldview

Secular

Parent Role:

Fully self-directed platform. Parents monitor progress via a dashboard but do not teach or grade.

Online Class Details

Enrollment:

Year round anytime

Delivery Format:

Asynchronous self paced

Reviews We Consulted

Updated: June 2026

How This Compares

Unlike Physics Prep (Dr. Jack Kernion) and Derek Owens, PhysicsGraph is not video-based — it uses text, animations, and adaptive problem sets. Its spaced-repetition approach is closer to platforms like Math Academy than to traditional homeschool science curricula. Less established in the homeschool community than either competitor.

Getting Started