Spreadsheet source lab # How to turn a spreadsheet into an AI quiz A spreadsheet evidence matrix and reproducible row-column fidelity test for preserving headers, formulas, units, locale, precision, blanks, hidden states, and provenance before generating source-traceable questions. Published7 October 2026Reading time12 minEvidenceSpreadsheet evidence matrix and row-column fidelity testAuthorThe AI Quiz Lab Turn a spreadsheet into an AI quiz by defining the evidence range before generating questions. Preserve workbook and sheet names, row and column headers, cell types, units, formulas, displayed values, blanks, filters, and provenance; then draft items only from verified cells. Block publication when merged headers, hidden data, stale formulas, missing units, or locale changes can alter the answer. ## Key findings, verified 7 October 2026 - Current quiz generators advertise XLSX input, confirming a distinct spreadsheet-to-quiz workflow. - A cell's meaning depends on its sheet, range, row header, column header, type, unit, and sometimes its formula. - Microsoft recommends simple tables with clear headers and warns that merged, split, or blank cells can disrupt table navigation. - Displayed values and stored values can support different answers unless the assessment rule chooses one. - Structural fidelity does not prove data accuracy, statistical validity, accessibility, or permission to upload the workbook. ## What is a spreadsheet-to-quiz workflow? A spreadsheet-to-quiz workflow converts tabular or calculated data into explicit evidence records before creating questions, answers, explanations, and tolerances. It differs from a document workflow because flattening an .xlsx file to plain text or CSV can preserve visible values while losing sheet boundaries, formulas, named ranges, formatting-based units, hidden states, charts, and header relationships. ## Spreadsheet evidence matrix Evidence layerCaptureReview questionPublication blockerWorkbook and sheetFilename, version, sheet name, visible or hidden stateIs this the authoritative sheet?A hidden draft is treated as finalTable boundaryNamed table, named range, or exact cell rangeWhere does evidence start and stop?Instructions or totals enter the wrong datasetHeadersColumn headings, row labels, multi-row hierarchyCan every value be named unambiguously?A value maps to two possible headersCell valueStored value, displayed value, type, and precisionWhich representation governs the answer?Rounding changes the keyed answerFormulaFormula text, dependencies, calculation stateIs the output current and reproducible?A cached result is stale or a dependency is missingUnits and localeUnit, currency, decimal convention, date system, timezoneWill export change interpretation?1,234 is parsed with the wrong localeBlanks and errorsBlank, zero, not applicable, suppressed, error codeAre absence states kept distinct?A blank becomes zero or an invented factProvenanceSource, update time, owner, exclusions, permissionCan the data be traced and used?The source, freshness, or authority is unknown ## Reproducible spreadsheet-fidelity test - Freeze the source. Save the workbook version and identify authoritative sheets. - Bound the evidence. Record named tables or exact ranges; exclude instructions, staging data, and decorative dashboards. - Repair header ambiguity. Unmerge cells or map every merged label explicitly while preserving header hierarchy. - Recalculate. Confirm formula dependencies, calculation state, errors, and external links. - Record both representations. Keep stored and displayed values whenever formatting changes meaning. - Normalize without erasing. Preserve original dates, times, currencies, percentages, decimals, and units beside normalized values. - Label absence states. Keep blank, zero, not applicable, suppressed, filtered out, and error values distinct. - Assign evidence IDs. Use stable references such as Sales!T1-R04-C03. - Generate five calibration items. Require an answer, explanation, evidence ID, range, unit, and tolerance when relevant. - Trace and challenge. Reproduce every answer and test rounding, date, locale, hidden-row, and filter boundaries before publication. ## Worked example: displayed percentage versus stored value A dashboard displays 12.3%, while the cell stores 0.12346. One generated item keys 12.346%; another expects 12.3%. Both are defensible until the evidence contract states whether the quiz tests the displayed dashboard or the underlying calculation. The repair is explicit: displayed answer = 12.3%; tolerance = ±0.05 percentage points. If the quiz tests calculation, preserve the formula and rounding rule. If it tests reading the dashboard, use the displayed value and cite the exact cell. ## Source-bounded spreadsheet prompt Using only the verified spreadsheet evidence records below, create the requested quiz. Preserve workbook, sheet, table, row, column, unit, data type, locale, precision, displayed value, stored value, and formula context. For every item return the question, correct answer, explanation, evidence ID, source range, and tolerance when applicable. Treat blank, zero, not applicable, suppressed, filtered-out, and error states as distinct. Flag insufficient evidence instead of inferring from hidden or excluded cells. ## Accessibility belongs in the source audit Microsoft's current Excel guidance recommends simple tables, clear column headers, descriptive sheet and table names, named ranges, and avoidance of merged, split, or unexplained blank cells. These practices support screen-reader navigation and also reduce extraction ambiguity. They do not replace an accessibility review of the final quiz, which still needs keyboard, label, focus, contrast, status-message, and reflow checks. ## Publication blockers - The authoritative workbook, sheet, table, or range is unclear. - A merged header cannot be mapped to every value. - A formula is stale, broken, circular, or dependent on unavailable data. - Stored and displayed values create different defensible answers. - Locale, timezone, date system, currency, percentage basis, or unit is missing. - Hidden rows, filters, or suppressed values change the conclusion. - Sensitive or proprietary data lacks an approved processing path. - An answer cannot be reproduced from the frozen workbook version. ## What this audit does not prove This test checks structural extraction, interpretation rules, and source traceability. It does not prove that the data is accurate, complete, current, unbiased, statistically valid, accessible, or appropriate for assessment. A spreadsheet can be internally consistent and still contain bad data, a misleading model, or confidential information. ## Sources, verification date, and corrections This guide was verified on 7 October 2026 against [QuizPilot's current first-party page](https://quizpilot.ai/) and [Adobe Acrobat's current quiz-maker page](https://www.adobe.com/acrobat/online/quiz-maker.html), both of which document XLSX input, plus Microsoft's current guidance for [accessible Excel spreadsheets](https://support.microsoft.com/en-gb/accessibility/excel/accessibility-best-practices-with-excel-spreadsheets) and [accessible tables](https://support.microsoft.com/en-us/excel/accessibility/video-create-more-accessible-tables-in-excel). Those sources support the input and structure claims. The matrix, ten-step test, example, prompt, and blockers are original AI Quiz Lab evidence assets. Report a changed capability or reproducibility problem through the [corrections process](https://bestaiquizgenerator.com/corrections). ## Next checks Use the [question-quality checklist](https://bestaiquizgenerator.com/blog/how-to-evaluate-ai-generated-quiz-questions) on the generated set and the [accessibility checklist](https://bestaiquizgenerator.com/blog/accessible-ai-quiz-checklist) on the playable experience. If the workbook contains an existing question bank, verify the answer key and accepted tolerances rather than treating import success as evidence of correctness. --- Canonical: https://bestaiquizgenerator.com/blog/spreadsheet-to-ai-quiz