Acknowledgements, copyright and credits

What we are, plainly

InternationalSchoolK12 is a brand, not a company: the School is operated by a private corporation registered in Ontario, Canada, which owns the platform, its content and its marks. It is not registered as a school in any country or state yet. Records and certificates show what your child achieved in this school; whether another school or country accepts them is their decision. Where the law does not allow an online school run with AI, families use it as tutoring.

Reach us by email at privacy@isk12.com, or through your family account once enrolled; the full legal name of the operator is in the enrolment terms and on every receipt.

Ownership and use of our material

© 2026 InternationalSchoolK12. All rights reserved. Copyright exists automatically in every country of the Berne Convention; the © notice states who holds it.

The lessons, practice items, illustrations, diagrams, narration, marking schemes, software and brand of InternationalSchoolK12 are the property of the School's operator, a private Ontario corporation and its licensors. Lesson text is written to published academic standards in our own words with AI assistance and is reviewed by people before it is published.

Families and students enrolled at InternationalSchoolK12 may use this material for that student's own learning under the enrolment terms. Copying, sharing, selling, scraping or using it to train a model is not allowed without written permission.

Work made on the platform by staff, contractors and students is the platform's under the agreements each person accepts. InternationalSchoolK12 uses a student's work to teach, mark and report to the family; it does not publish a student's work to promote the School without written permission, and never uses it to train an AI model.

Anyone who posts material here promises it is their own or free to use. InternationalSchoolK12 is not responsible for material a person posts in breach of that promise; it may remove any material and will make a reasonable attempt to remove material shown to infringe someone's rights.

Academic standards

Standards are referenced by their codes only; the summaries are our own. Their publishers ask us to show:

• Common Core State Standards (mathematics and English language arts)
  © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. Neither body reviewed or endorsed this school.
• Next Generation Science Standards
  NGSS Lead States. 2013. Next Generation Science Standards: For States, By States. Washington, DC: The National Academies Press. "Next Generation Science Standards" is a registered trademark of WestEd. Neither WestEd nor the lead states were involved in the production of this product and do not endorse it.
• College, Career, and Civic Life (C3) Framework for Social Studies State Standards
  © 2013 National Council for the Social Studies. Used under its terms for educational reference; NCSS did not review or endorse this product.

Sources consulted

Lessons are written in the School's own words to the standards above, with AI assistance, and checked by people. When a fact or definition is checked, it is checked against reputable public sources; the sources below are the ones our writing and review rules name. Nothing is copied from them into a lesson unless its licence allows and a credit line says so.

• Merriam-Webster dictionaries — Merriam-Webster, Incorporated · Consulted for definitions; not reproduced
• NASA — National Aeronautics and Space Administration · U.S. public domain (most material)
• NOAA — National Oceanic and Atmospheric Administration · U.S. public domain (most material)
• USGS — U.S. Geological Survey · U.S. public domain (most material)
• Library of Congress — Library of Congress · Public domain and rights-stated collections
• U.S. National Archives — National Archives and Records Administration · Public domain and rights-stated collections
• Wikimedia Commons — Wikimedia Foundation and individual contributors · Per file: CC0, public domain, CC BY or CC BY-SA, credited where used

Pictures and clips in lessons are the School's own work or come from public-domain or openly licensed sources (CC0, public domain, CC BY, CC BY-SA). Where a licence asks for credit, the credit line is shown under the picture in the lesson.

When a lesson links to another website, it opens in a new tab and that site's own terms and privacy notice apply. We never show another site's pages inside ours or charge for them; sites whose terms do not allow use inside a paid product are linked only.

Linked only, never embedded: khanacademy.org, ck12.org, openstax.org, geogebra.org, desmos.com, commonlit.org, readworks.org, starfall.com, coreknowledge.org, and video sites.

Open-source tools we recommend

Lessons and projects may use free tools that families install themselves. Each is the work of its own authors under the licence shown; the School did not write them, does not distribute them, and is not endorsed by them. Each name is a trademark of its owner.

• Arduino IDE · AGPL-3.0
  Electronics and sensor projects (hardware bought by the family)
• Audacity · GPL-3.0
  Sound experiments: waves, frequency
• Avogadro · BSD-3-Clause
  Building and viewing molecules
• GCompris · AGPL-3.0
  Reading, counting and early math activities
• GeoGebra · GeoGebra Non-Commercial Licence
  Interactive geometry, graphing, algebra and 3D
• GNU Octave · GPL-3.0
  Numerical math and graphing
• JupyterLab · BSD-3-Clause
  Notebooks for math, statistics and lab data
• LibreOffice · MPL-2.0
  Writing, spreadsheets for lab data, presentations
• Maxima (wxMaxima) · GPL-2.0
  Computer algebra: equations, calculus
• myPhysicsLab · Apache-2.0
  Browser physics models; check each model’s units and limitations
• QGIS · GPL-2.0
  Maps and geography data
• QScintilla 2 · GPL-3.0
  Source-code editor component behind Octave's editor and Python/Qt editor projects (a library, installed with Octave)
• R · GPL-2.0
  Statistics, data analysis and plots for science projects
• Scilab · GPL-2.0
  Numerical computing, signal and control simulations (Xcos)
• Scratch · BSD-3-Clause
  Block-based coding
• Stellarium · GPL-2.0
  Planetarium for astronomy
• Thonny + Python · MIT / PSF
  Beginner Python for math and science
• Tracker · GPL-3.0
  Video analysis for physics experiments
• Tux Paint · GPL-2.0
  Drawing for young children

GeoGebra is free for non-commercial use by learners under its own licence; the School links to it and never embeds it.

Trademarks

Other names and marks on this site belong to their owners; they appear only to say which open-source tools a family might use. None of those organisations is connected with InternationalSchoolK12.

InternationalSchoolK12™, ISK12™ and the School's logo are trademarks of the School's operator, a private Ontario corporation. The ™ symbol marks a trademark claimed in use; ® will be used only once a registration is granted. Other names and marks on this site belong to their owners; their appearance here states a fact about what we use or recommend and is not an endorsement by them or of them.