The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.
Unscheduled School Closings and Student Performance
Open accessAbstract
Do students perform better on statewide assessments in years in which they have more school days to prepare? We explore this question using data on math and reading assessments taken by students in the third, fifth, and eighth grades since 1994 in Maryland. Our identification strategy is rooted in the fact that tests are administered on the same day(s) statewide in late winter or early spring, so any unscheduled closings due to snow reduce instruction time and are not made up until after the exams are over. We estimate that in academic years with an average number of unscheduled closures (five), the number of third graders performing satisfactorily on state reading and math assessments within a school is nearly 3 percent lower than in years with no school closings. The impacts of closure are smaller for students in fifth and eighth grades. Combining our estimates with actual patterns of unscheduled closings in the last three years, we find that more than half of schools failing to make adequate yearly progress (AYP) in third-grade math or reading, required under No Child Left Behind, would have met AYP if schools had been open on all scheduled days.
Overview
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
In the citing paper
“Similarly, Marcotte and Hemelt (2008) and Goodman (2014) both find that individual absences related to snow days have a more negative impact on achievement in schools with higher poverty rates”
From Educational Inequality* (2022) · cites this paper as Marcotte and Hemelt (2008)
In the citing paper
“Marcotte and Hemelt (2008) observe measurably lower performance from just five days of lost school instruction due to snow days in Maryland, with the effect being larger for younger children.”
From Educational Inequality* (2022) · cites this paper as Marcotte and Hemelt (2008)
Citations
Cites
Specification Tests in Econometrics
Hausman, J. A. (1978) · Econometrica · doi:10.2307/1913827 · Cited by 18,820
Card, D., & Krueger, A. B. (1990) · National Bureau of Economic Research · doi:10.3386/w3358 · Cited by 1,249
Card, D., & Krueger, A. B. (1992) · Journal of Political Economy · doi:10.1086/261805 · Cited by 1,147
Card, D., & Krueger, A. B. (1996) · The Journal of Economic Perspectives · doi:10.1257/jep.10.4.31 · Cited by 423
Hanushek, E. A. (2002) · National Bureau of Economic Research · doi:10.3386/w8799 · Cited by 420
Does School Quality Explain the Recent Black/White Wage Trend?
Grogger, J. (1996) · Journal of Labor Economics · doi:10.1086/209810 · Cited by 189
Schooling and test scores: A mother-natural experiment
Marcotte, D. E. (2006) · Economics of Education Review · doi:10.1016/j.econedurev.2006.08.001 · Cited by 169
Self-citationTime to learn? The organizational structure of schools and student achievement
Eren, Ö., & Millimet, D. L. (2006) · Empirical Economics · doi:10.1007/s00181-006-0093-2 · Cited by 29
Cited by
Sorted by citations
Learning loss due to school closures during the COVID-19 pandemic
Engzell, P., Frey, A., & Verhagen, M. D. (2021) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.2022376118 · Cited by 1,848
Projecting the Potential Impact of COVID-19 School Closures on Academic Achievement
Kuhfeld, M., Soland, J., Tarasawa, B., Johnson, A., Ruzek, E., & Liu, J. (2020) · Educational Researcher · doi:10.3102/0013189x20965918 · Cited by 997
Goldemberg, D., Azevedo, J. P., Iqbal, S. A., Hasan, A., & Geven, K. (2020) · doi:10.1596/1813-9450-9284 · Cited by 476
Inequalities in Children's Experiences of Home Learning during the COVID‐19 Lockdown in England*
Andrew, A., Cattan, S., Dias, M. C., Farquharson, C., Kraftman, L., Krutikova, S., Phimister, A., & Sevilla, A. (2020) · Fiscal Studies · doi:10.1111/1475-5890.12240 · Cited by 488
Lavy, V. (2015) · The Economic Journal · doi:10.1111/ecoj.12233 · Cited by 369
Learning loss due to school closures during the COVID-19 pandemic
Engzell, P., Frey, A., & Verhagen, M. D. (2020) · doi:10.31235/osf.io/ve4z7 · Cited by 1,739
The impact of lockdown on the learning gap: family and school divisions in times of crisis
Bonal, X., & González, S. (2020) · International Review of Education · doi:10.1007/s11159-020-09860-z · Cited by 309
Family income, school attendance, and academic achievement in elementary school.
Morrissey, T. W., Hutchison, L. A., & Winsler, A. (2013) · Developmental Psychology · doi:10.1037/a0033848 · Cited by 304
Instruction time, Classroom Quality, and Academic Achievement
Rivkin, S. G., & Schiman, J. C. (2015) · The Economic Journal · doi:10.1111/ecoj.12315 · Cited by 266
Assessing the effect of school days and absences on test score performance
Aucejo, E. M., & Romano, T. F. (2016) · Economics of Education Review · doi:10.1016/j.econedurev.2016.08.007 · Cited by 222
Are Student Absences Worth the Worry in U.S. Primary Schools?
Gershenson, S., Jacknowitz, A., & Brannegan, A. (2017) · Education Finance and Policy · doi:10.1162/edfp_a_00207 · Cited by 218
Katrina's Children: Evidence on the Structure of Peer Effects from Hurricane Evacuees
Imberman, S. A., Kugler, A. D., & Sacerdote, B. I. (2012) · American Economic Review · doi:10.1257/aer.102.5.2048 · Cited by 299
The Effect of COVID-19 on Education
Hoofman, J., & Secord, E. A. (2021) · Pediatric Clinics of North America · doi:10.1016/j.pcl.2021.05.009 · Cited by 204
Flaking Out: Student Absences and Snow Days as Disruptions of Instructional Time
Goodman, J. (2014) · doi:10.3386/w20221 · Cited by 177
The Long-Run Effects of Teacher Strikes: Evidence from Argentina
Jaume, D., & Willén, A. (2019) · Journal of Labor Economics · doi:10.1086/703134 · Cited by 142
Curran, F. C. (2016) · Educational Evaluation and Policy Analysis · doi:10.3102/0162373716652728 · Cited by 140
Fitzpatrick, M. D., Grissmer, D., & Hastedt, S. (2011) · Economics of Education Review · doi:10.1016/j.econedurev.2010.09.004 · Cited by 123
School Absenteeism and Academic Achievement: Does the Reason for Absence Matter?
Klein, M., Sosu, E., & Dare, S. (2022) · AERA Open · doi:10.1177/23328584211071115 · Cited by 153
Does Shortening the School Week Impact Student Performance? Evidence from the Four-Day School Week
Anderson, D. M., & Walker, M. B. (2015) · Education Finance and Policy · doi:10.1162/edfp_a_00165 · Cited by 118
Linking getting to school with going to school
Gottfried, M. A. (2017) · Educational Evaluation and Policy Analysis · doi:10.3102/0162373717699472 · Cited by 104
Weight‐Related Behaviors When Children Are in School Versus on Summer Breaks: Does Income Matter?
Wang, Y. C., Vine, S. M., Hsiao, A., Rundle, A., & Goldsmith, J. (2015) · Journal of School Health · doi:10.1111/josh.12274 · Cited by 101
Intensive Math Instruction and Educational Attainment: Long-Run Impacts of Double-Dose Algebra
Cortes, K. E., Goodman, J., & Nomi, T. (2014) · National Bureau of Economic Research · doi:10.3386/w20211 · Cited by 97
Conto, C. A., Akseer, S., Dreesen, T., Kamei, A., Mizunoya, S., & Rigole, A. (2021) · International Journal of Educational Development · doi:10.1016/j.ijedudev.2021.102434 · Cited by 96
Mazrekaj, D., & Witte, K. D. (2023) · Perspectives on Psychological Science · doi:10.1177/17456916231181108 · Cited by 128
Intensive Math Instruction and Educational Attainment: Long-Run Impacts of Double-Dose Algebra
Cortes, K. E., Goodman, J. S., & Nomi, T. (2015) · Journal of Human Resources · doi:10.1353/jhr.2015.0004 · Cited by 91
Back to school blues: Seasonality of youth suicide and the academic calendar
Hansen, B., & Lang, M. (2011) · Economics of Education Review · doi:10.1016/j.econedurev.2011.04.012 · Cited by 88
Increased instruction hours and the widening gap in student performance
Huebener, M., Kuger, S., & Marcus, J. (2017) · Labour Economics · doi:10.1016/j.labeco.2017.04.007 · Cited by 105
Pannaraj, P. S., Wang, H., Rivas, H., Wiryawan, H., Smit, M., Green, N., Aldrovandi, G. M., Amin, A. N. E., & Mascola, L. (2014) · Clinical Infectious Diseases · doi:10.1093/cid/ciu340 · Cited by 82
Do children spend too much time in schools? Evidence from a longer school year in Indonesia
PARINDURI, R. A. (2014) · Economics of Education Review · doi:10.1016/j.econedurev.2014.05.001 · Cited by 79
The impact of extreme weather events on education
Groppo, V., & Kraehnert, K. (2016) · Journal of Population Economics · doi:10.1007/s00148-016-0628-6 · Cited by 79
School Year Length and Student Performance: Quasi-Experimental EvidencePreprint
Hansen, B. (2013) · SSRN Electronic Journal · doi:10.2139/ssrn.2269846 · Cited by 78
When the Bell Tolls: The Effects of School Starting Times on Academic Achievement
Hinrichs, P. (2011) · Education Finance and Policy · doi:10.1162/edfp_a_00045 · Cited by 77
Asadullah, M. N., & Chaudhury, N. (2011) · Economics of Education Review · doi:10.1016/j.econedurev.2011.05.001 · Cited by 59
The Impacts Of Natural Disaster On Student Achievement: Evidence From Severe Floods in Thailand
Thamtanajit, K. (2019) · The Journal of Developing Areas · doi:10.1353/jda.2020.0042 · Cited by 51
The Long-Term Effects of Student Absence: Evidence from Sweden
Cattan, S., Kamhöfer, D. A., Karlsson, M., & Nilsson, T. (2023) · The Economic Journal · doi:10.1093/ej/ueac078 · Cited by 44
Test-Mex: Estimating the effects of school year length on student performance in Mexico
Agüero, J. M., & Beleche, T. (2013) · Journal of Development Economics · doi:10.1016/j.jdeveco.2013.03.008 · Cited by 50
School absenteeism and academic achievement: Does the timing of the absence matter?
Keppens, G. (2023) · Learning and Instruction · doi:10.1016/j.learninstruc.2023.101769 · Cited by 56
Why Is School Closed Today? Unplanned K-12 School Closures in the United States, 2011–2013
Wong, K. K., Shi, J., Gao, H., Zheteyeva, Y. A., Lane, K., Copeland, D., Hendricks, J., McMurray, L., Sliger, K., Rainey, J. J., et al. (2014) · PLoS ONE · doi:10.1371/journal.pone.0113755 · Cited by 49
Figlio, D., Holden, K. L., & Özek, U. (2018) · Economics of Education Review · doi:10.1016/j.econedurev.2018.06.003 · Cited by 49
Blanden, J., Doepke, M., & Stuhler, J. (2022) · National Bureau of Economic Research · doi:10.3386/w29979 · Cited by 72
“In addition, higher returns to education can incentivize parents to relocate to more expensive neighborhoods with stronger schools (see Nechyba (2006) for an analysis of the impact of residential sorting on educational inequality).”
BackgroundGershenson, S., & Tekin, E. (2017) · Education Finance and Policy · doi:10.1162/edfp_a_00234 · Cited by 56
Lavy, V. (2019) · Journal of the European Economic Association · doi:10.1093/jeea/jvy054 · Cited by 45
School district consolidation policies: endogenous cost inefficiency and saving reversals
Karakaplan, M. U., & Kutlu, L. (2017) · Empirical Economics · doi:10.1007/s00181-017-1398-z · Cited by 44
Meyers, K., & Thomasson, M. A. (2017) · National Bureau of Economic Research · doi:10.3386/w23890 · Cited by 43
The potential effects of the COVID-19 pandemic on learnings
Monroy-Gómez-Franco, L., Vélez-Grajales, R., & López-Calva, L. (2022) · International Journal of Educational Development · doi:10.1016/j.ijedudev.2022.102581 · Cited by 26
Bonal, X., & González, S. (2021) · Revista de Sociología de la Educación-RASE · doi:10.7203/rase.14.1.18177 · Cited by 40
Dressed for success? The effect of school uniforms on student achievement and behavior
Gentile, E., & Imberman, S. A. (2012) · Journal of Urban Economics · doi:10.1016/j.jue.2011.10.002 · Cited by 40
How to Make Additional Time Matter: Integrating Individualized Tutorials into an Extended Day
Kraft, M. A. (2014) · Education Finance and Policy · doi:10.1162/edfp_a_00152 · Cited by 39
Multi-Track Year-Round Schooling as Cost Saving Reform: Not Just a Matter of Time
Graves, J., McMullen, S., & Rouse, K. (2013) · Education Finance and Policy · doi:10.1162/edfp_a_00097 · Cited by 35
School crowding, year-round schooling, and mobile classroom use: Evidence from North Carolina
McMullen, S. C., & Rouse, K. E. (2012) · Economics of Education Review · doi:10.1016/j.econedurev.2012.05.005 · Cited by 35
Police shootings, civic unrest and student achievement: evidence from Ferguson
Gershenson, S., & Hayes, M. S. (2017) · Journal of Economic Geography · doi:10.1093/jeg/lbx014 · Cited by 36
Blanden, J., Doepke, M., & Stuhler, J. L. (2023) · Handbook of the economics of education · doi:10.1016/bs.hesedu.2022.11.003 · Cited by 52
Time in School: A Conceptual Framework, Synthesis of the Causal Research, and Empirical Exploration
Kraft, M. A., & Novicoff, S. (2024) · American Educational Research Journal · doi:10.3102/00028312241251857 · Cited by 48
Opportunity to learn and students' attitudes towards mathematics
(2016) · Programme for international student assessment/Internationale Schulleistungsstudie · doi:10.1787/9789264258495-table89-en · Cited by 34
Klein, M., & Sosu, E. (2023) · Sociology of Education · doi:10.1177/00380407231191541 · Cited by 47
Can pandemics affect educational attainment? Evidence from the polio epidemic of 1916
Meyers, K., & Thomasson, M. A. (2020) · Cliometrica · doi:10.1007/s11698-020-00212-3 · Cited by 32
Increased Instruction Hours and the Widening Gap in Student Performance
Huebener, M., Kuger, S., & Marcus, J. (2016) · SSRN Electronic Journal · doi:10.2139/ssrn.2753493 · Cited by 32
Whitney, C. R., & Liu, J. (2017) · AERA Open · doi:10.1177/2332858417703660 · Cited by 29
Effects of Four-Day School Weeks on Student Achievement: Evidence from Oregon
Thompson, P. N. (2019) · Journal of Public Economics · doi:10.1016/j.jpubeco.2020.104308 · Cited by 39
Impact of short school closures (1–5 days) on overall academic performance of schools in California
Miller, R. K., & Hui, I. S. (2022) · Scientific Reports · doi:10.1038/s41598-022-06050-9 · Cited by 29
Are Student Absences Worth the Worry in U.S. Primary Schools?Preprint
Gershenson, S., Jacknowitz, A., & Brannegan, A. (2015) · SSRN Electronic Journal · doi:10.2139/ssrn.2708371 · Cited by 28
Falch, T., Nyhus, O. H., & Strøm, B. (2014) · Labour Economics · doi:10.1016/j.labeco.2014.07.016 · Cited by 27
How do students react to longer instruction time? Evidence from Italy†
Meroni, E. C., & Abbiati, G. (2016) · Education Economics · doi:10.1080/09645292.2015.1122742 · Cited by 26
Sood, S., & Saini, M. (2020) · Education and Information Technologies · doi:10.1007/s10639-020-10381-3 · Cited by 24
Ryu, S., & Johansen, M. (2015) · International Public Management Journal · doi:10.1080/10967494.2015.1059915 · Cited by 26
Sapkota, J. B., & Neupane, P. (2021) · Education Sciences · doi:10.3390/educsci11080371 · Cited by 22
Primary and secondary education and poverty review
Connelly, R., Sullivan, A., & Jerrim, J. (2014) · University of Warwick · doi:10.82444/warw.33707044 · Cited by 21
CAN SCHOOL SPORTS REDUCE RACIAL GAPS IN TRUANCY AND ACHIEVEMENT?
Cuffe, H. E., Waddell, G. R., & Bignell, W. (2017) · Economic Inquiry · doi:10.1111/ecin.12452 · Cited by 20
Spear, S., Parkin, J., van Steen, T., & Goodall, J. (2021) · Educational Review · doi:10.1080/00131911.2021.2007054 · Cited by 24
Heterogeneity in the educational impacts of natural disasters: Evidence from Hurricane Florence
Morrill, M. S., & Westall, J. (2023) · Economics of Education Review · doi:10.1016/j.econedurev.2023.102373 · Cited by 16
Children and Adolescents’ Lived Experiences During the COVID-19 Pandemic
Swank, J. M., Weaver, J. L., & Prikhidko, A. (2021) · The Family Journal · doi:10.1177/10664807211052303 · Cited by 17
Instruction Time, Classroom Quality, and Academic Achievement
Rivkin, S. G., & Schiman, J. C. (2013) · National Bureau of Economic Research · doi:10.3386/w19464 · Cited by 17
Bessho, S., Noguchi, H., Kawamura, A., Tanaka, R., & Ushijima, K. (2019) · Japan and the World Economy · doi:10.1016/j.japwor.2019.04.003 · Cited by 16
The influence of closing poor performing primary schools on the educational attainment of students
Witte, K. D., & van Klaveren, C. (2014) · Educational Research and Evaluation · doi:10.1080/13803611.2014.940979 · Cited by 16
Özek, U. (2021) · Journal of Public Economics · doi:10.1016/j.jpubeco.2021.104518 · Cited by 15
Educación a distancia, familias y brecha digital: lecciones del cierre escolar
González, S., & Bonal, X. (2023) · Revista de Educación a Distancia (RED) · doi:10.6018/red.541031 · Cited by 15
School Closures During the 1918 Flu Pandemic
Ager, P., Eriksson, K., Karger, E., Nencka, P., & Thomasson, M. A. (2020) · The Review of Economics and Statistics · doi:10.1162/rest_a_01170 · Cited by 31
TOKER, T. (2022) · International Journal of Contemporary Educational Research · doi:10.33200/ijcer.985992 · Cited by 15
Bridging the Discontinuity in Adolescent Literacy? Mixed Evidence from a Middle Grades Intervention
Dougherty, S. M. (2015) · Education Finance and Policy · doi:10.1162/edfp_a_00157 · Cited by 14
Andrietti, V. (2015) · SSRN Electronic Journal · doi:10.2139/ssrn.2632002 · Cited by 14
It’s time to learn: School institutions and returns to instruction time
Fernández, A. B., & Bovini, G. (2020) · Economics of Education Review · doi:10.1016/j.econedurev.2020.102068 · Cited by 13
Chaban, T., Rameeva, R., Denisov, I., Дмитриевна, К. Ю., & Zvyagintsev, R. (2022) · Voprosy Obrazovaniya/ Educational Studies Moscow · doi:10.17323/1814-9545-2022-1-160-188 · Cited by 13
Evaluating the Impact of Small Group Supplemental Math Enrichment in Kindergarten
Jacob, R. T., Erickson, A., & Mattera, S. K. (2020) · Journal of Research on Educational Effectiveness · doi:10.1080/19345747.2020.1726539 · Cited by 15
Gershenson, S., & Tekin, E. (2015) · SSRN Electronic Journal · doi:10.2139/ssrn.2589820 · Cited by 13
Should We Increase Instruction Time in Low Achieving Schools? Evidence from Southern ItalyPreprint
Battistin, E., & Meroni, E. C. (2013) · SSRN Electronic Journal · doi:10.2139/ssrn.2283552 · Cited by 13
Dräger, J., Klein, M., & Sosu, E. (2024) · PLoS ONE · doi:10.1371/journal.pone.0306716 · Cited by 28
Lavenne-Collot, N., Ailliot, P., Badic, S., Favé, A., François, G., Saint-André, S., Thierry, A., & Bronsard, G. (2021) · Neuropsychiatrie de l Enfance et de l Adolescence · doi:10.1016/j.neurenf.2021.02.006 · Cited by 14
Schüller, S., & Steinberg, H. S. (2022) · Labour Economics · doi:10.1016/j.labeco.2022.102217 · Cited by 14
The economic impact of school closures during the 2015 flood in Richland County, South Carolina
Gall, M., Sheldon, T. L., & Collins, L. (2022) · Risk Hazards & Crisis in Public Policy · doi:10.1002/rhc3.12242 · Cited by 12
Cumulative instructional time and student achievement
Mandel, P. C., Süßmuth, B., & Sunder, M. (2018) · Education Economics · doi:10.1080/09645292.2018.1512559 · Cited by 11
Kempkes, G. (2016) · SSRN Electronic Journal · doi:10.2139/ssrn.2785379 · Cited by 10
Educational InequalityPreprint
Blanden, J., Doepke, M., & Stuhler, J. L. (2022) · SSRN Electronic Journal · doi:10.2139/ssrn.4114801 · Cited by 15
Collet, V. S., & Berman, E. (2021) · The Review of Education Pedagogy & Cultural Studies · doi:10.1080/10714413.2021.1873005 · Cited by 10
Gershenson, S., & Tekin, E. (2015) · National Bureau of Economic Research · doi:10.3386/w21055 · Cited by 9
Lavy, V. (2012) · RePEc: Research Papers in Economics · Cited by 9
Policy‐Induced School Calendar Changes and Teacher Moonlighting
Gilpin, G. A. (2019) · Southern Economic Journal · doi:10.1002/soej.12402 · Cited by 9
Dauelsberg, L. R., Maskery, B. A., Joo, H., Germann, T. C., Valle, S. Y. D., & Uzicanin, A. (2024) · BMC Public Health · doi:10.1186/s12889-023-17469-8 · Cited by 8
School Closures, Equality of Opportunity: Some Recommendations
Bouznad, S., & Ibourk, A. (2020) · Revista Romaneasca pentru Educatie Multidimensionala · doi:10.18662/rrem/12.2sup1/295 · Cited by 8
Modi, A. C., Patel, A. D., Stevens, J. H., Smith, G. M., Huszti, H. C., Guilfoyle, S. M., Mara, C. A., Schmidt, M., & Wagner, J. L. (2021) · Epilepsy & Behavior · doi:10.1016/j.yebeh.2021.107855 · Cited by 8
Hayes, M. S., & Gershenson, S. (2016) · Economics Letters · doi:10.1016/j.econlet.2016.01.023 · Cited by 8
Metadata
- Authors
- Marcotte, D. E., & Hemelt, S. W.
- Affiliations
- IZA - Institute of Labor Economics (DE)
- University of North Carolina at Chapel Hill (US)
- Corresponding author
- Marcotte, Dave E.
- Venue
- Education Finance and Policy
- Publisher
- MIT Press
- Published
- 2008-07
- Volume
- 3
- Issue
- 3
- Pages
- 316-338
- ISSN
- 1557-3060 (ISSN-L)
- 1557-3079
- OpenAlex
- W2114959928
- Cited by
- 222
- References
- 8
- Citations by year
- 2026: 4 · 2025: 8 · 2024: 16 · 2023: 24 · 2022: 20 · 2021: 16 · 2020: 12 · 2019: 9 · 2018: 4 · 2017: 10 · 2016: 47 · 2015: 15 · 2014: 13 · 2013: 11 · 2012: 3
- FWCI
- 14.50
- Type
- journal article
- Language
- en
- Open access
- green
- doi.org
- Locations
- Education Finance and Policy (publishedVersion)
- SSRN Electronic Journal (acceptedVersion)
- RePEc: Research Papers in Economics (submittedVersion)
- SSRN Electronic Journal (submittedVersion)
- Econstor (Econstor) (submittedVersion)
- Funders
- Smith Richardson Foundation
- Sid W. Richardson Foundation
- Rheinische Friedrich-Wilhelms-Universität Bonn
- Topics
- Social Sciences › Education › School Choice and Performance
- Social Sciences › Education › Educational Assessment and Improvement
- Social Sciences › Education › Educational Outcomes and Influences
- Keywords
- academic performance, mathematics assessment, reading assessment, instructional time, No Child Left Behind Act, Adequate Yearly Progress, school finance, Maryland
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review