About Prism
Prism is a free library of school lessons in physics, chemistry and maths for Classes 8 to 12, following the NCERT syllabus. Every chapter is built to be followed step by step, on any phone or computer.
Prism has no fees, no ads and no sign-up. The full course is free and will stay free.
Lessons are written with the help of an AI model (Claude, by Anthropic), checked against the syllabus, and tested for reading level. Prism is in beta: teachers have not yet reviewed every lesson, so mistakes are possible. If something looks wrong, trust your textbook and your teacher.
Prism is open, so schools and teachers can keep using and improving it.
Prism follows the NCERT syllabus but is not affiliated with or endorsed by NCERT. © 2026 the Prism contributors.
About the founder
I am a data engineer with a physics degree, and I am building Prism: free school lessons that work on a cheap phone, in clear language, for students who cannot pay for extra help.
Every school student should be able to learn well, whether or not their family can afford tuition. Prism is my attempt at that: lessons that explain an idea step by step, and that are free to use, free to copy and free to improve. The first students I am building for are in government schools and in Hindi and other regional-language schools, on shared, low-cost phones. Prism is in English today, with a Hindi interface and one Hindi lesson. I plan to add more Indian languages, not only Hindi.
I do not play with anyone's education. Accuracy, honesty and students' safety come before speed or a good-looking pitch. Prism is in beta, and no teacher has yet reviewed the lessons. I check the science at school level, and I am not a school teacher. Teacher review is what the planned pilot in partner schools is for.
I have worked as a data engineer for over four years, and I now work as a data engineer at a large financial-services company in the UK. I build and test data pipelines and models, and I care about data quality, clear documentation and sharing patterns that other engineers can reuse. I have also onboarded a new engineer from their first day and guided their work.
Tools I work with: SQL, Python, dbt, Snowflake, AWS, Apache Airflow, Git and CI/CD, Power BI.
Prism uses the same habits. Lessons are built from source files, checked by an automated build, kept free of tracking, and served as plain static files.
Contact
Found a mistake in a lesson? Have a question, an idea, or a school that would like to try Prism? I would like to hear from you.
My address is abhishek@alphago.in. The button opens your own email app. If it does not open, copy the address and write from any email account.
Please tell me the lesson name, the section and what looks wrong. A short note is enough. Facts and numbers matter most, so every report like this helps.
This site has no contact form and stores nothing about you. When you write, your message goes from your email account to my mailbox, and nowhere else. If you are under 18, please ask a parent or teacher before you write. Please do not send passwords or other private details.