Economics practice / Instructor workspace
Economics instructor workspace
Review question content and response records, assign assessments, and evaluate calibration candidates.
Checking instructor access…
Sign in with your instructor account, then return here to manage questions, responses and assessments.
IRT data workbench
Inspect response records, screen a course and unit, and export a person-by-item matrix for R. Imported files stay in this browser tab; they are not uploaded. Live data require instructor access.
No response data loaded.
Exclusions and fit readiness
Item diagnostics
For wide tables, focus the table region and use the left and right arrow keys to scroll.
Facility describes the adaptively selected sample; it is not IRT difficulty. Working binomial intervals do not adjust for adaptive selection.
Inspect submitted answers
Export for analysis
Save responses.csv and manifest.json together for the calibration workflow. Missing responses are blank, not zero. Person keys are pseudonymous, not anonymous. Keep these files private. Separately retained conflicting submissions never enter the IRT matrix.
Question library
Inspect every current question, its answer key, and its explanation. Item counts include numerical variants; family counts show the distinct question structures. Release status is separate from recorded self-review and empirical validation.
Search to load questions.
Response ledger
Calibration candidates
Upload a reviewed calibration package to retain its exact parameters and evidence. Registration does not approve the model or change student scoring.
Saved candidates
Load saved candidates to inspect earlier fits.