CASE Network (1EdTech)
CASE Network is a public registry of machine-readable learning-standard frameworks, run by the 1EdTech Consortium and hosted by Common Good Learning Tools, built with support from D2L's Achievement Standards Network (ASN). It gathers official academic standards from all 50 US states and other issuing agencies and publishes them in 1EdTech's CASE JSON format (Competencies and Academic Standards Exchange), giving each standard a stable, digitally referenceable identifier. The upgraded service is known as CASE Network 2, and 1EdTech has begun folding it into a wider CASE Global Ecosystem, with the platform itself now running under the Satchel Rosetta Exchange name.
This is a curriculum framework rather than teaching content. It defines an ordered set of competencies and standards by subject and grade level, the spine that says what should be taught, at which level and in what order, not the lessons or textbooks that teach it. Anyone can browse and search the registry without signing in. API and bulk download access to the machine-readable CASE data is free but requires registration, open to edtech suppliers, educational institutions and non-commercial entities alike.
For RAG this is best used as a competency backbone rather than a corpus to read. An AI tutor can map a learner to a subject and grade, retrieve the matching standards, sequence teaching against them, then pull explanatory material from graded content to fill each step. Because every standard carries a persistent identifier, retrieved lessons can be aligned precisely to the framework. It pairs naturally with the open educational content already listed here, such as OpenStax, MIT OpenCourseWare, LibreTexts, OER Commons and MERLOT, which supply the lessons and textbooks the framework can order and align.
On licensing, 1EdTech's stated aim is that state and national standards should be in CASE format and free for anyone to use, for any reason, and access carries no cost. Note one caveat: individual frameworks belong to their issuing agencies, so some (for example certain copyrighted standards) may carry their own reuse terms, which is why the content licence can differ from the free-access registry itself.
Related sources
Achievement Standards Network
Machine-readable curriculum standards from US states, national bodies and other jurisdictions, modelled as an RDF graph of URI-addressable learning objectives with cross-jurisdiction alignments. Now run by D2L and free to use.
AGIEval
8,062 questions drawn from 20 official standardised exams (SAT, LSAT, GMAT, GRE, Gaokao, AMC/AIME and more) in English and Chinese, packaged as a human-centric benchmark for evaluating foundation models.
CEFR Companion Volume Descriptors
The Council of Europe's 2020 CEFR Companion Volume descriptor set, the de facto international standard for levelling language proficiency from Pre-A1 to C2. A spine of can-do statements for sequencing and grading language teaching.
CEFR-J English Profiles (Open Language Profiles)
Open datasets from Tono Lab at TUFS mapping English vocabulary and grammar to fine-grained CEFR-J sub-levels, from A1 to C2. Grade words and structures by level and gauge text difficulty for language tutoring.