NAEP proficiencies
Bellwork keeps NAEP separate from state assessment proficiency. NAEP is the cleaner layer for national cross-state context because it uses one assessment framework and one achievement-level definition.
A national benchmark layer, not a replacement for local state data.
Bellwork stores NAEP assessment rows separately from state assessment data so national benchmark measures do not get mixed with state-defined proficiency.
Rows are normalized by jurisdiction, school year, subject, grade, student group, achievement level percentages, average scale score, and sampling metadata when present.
The dashboard map reads a compact state-level projection from the API. The UI colors states from the selected subject and grade without asking the client to understand the source table.
NAEP remains a distinct product source. It is useful for cross-state comparison; state assessment proficiency is better for local operating detail inside a state.
What the product reads.
The map layer is intentionally small: it asks for one subject and grade, then receives state-level values ready for coloring and tooltip display.
Use NAEP for cross-state signal. Use state assessments for local operating detail.
A NAEP proficiency percentage is not the same as a state-defined proficiency percentage. The dashboard keeps those layers separate so national benchmarking does not blur into state accountability systems, local test design, or state-specific cut scores.