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It specifies sources including exam school application, enrollment snapshots, MCAS test scores, College Board records (PSAT/SAT/AP), and National Student Clearinghouse data. For the exam application file, it defines record structure, filtering exclusions, and offer-based coding using grade- and school-specific minimum cutoffs derived from observed offers.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/appendix-c-boston-data-exam-application-data-and-analysis-sample-processing/270991/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/appendix-c-boston-data-exam-application-data-and-analysis-sample-processing/270991.png","ImageObject",300,407,{"name":92,"@type":93},"Taylor Morgan","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-29","2026-09-15",true,{"@type":102,"interactionType":103,"userInteractionCount":39},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What data sources are included in Appendix C for Boston?","Question",{"text":112,"@type":113},"It uses four main datasets: the exam school application file, the enrollment file, the MCAS test score file, and the College Board test file (PSAT, SAT, AP), along with data from the National Student Clearinghouse.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How is the exam application file used to determine whether a student receives an offer?",{"text":117,"@type":113},"For each application year, grade, and school, the appendix defines the lowest-ranked student who receives an offer. A student is coded as obtaining an offer if their exam score is above the minimum cutoff for any school on their preference list.",{"name":119,"@type":110,"acceptedAnswer":120},"What filtering steps are applied when constructing the analysis sample from raw application data?",{"text":121,"@type":113},"Duplicate observations are excluded, applicants from private schools are removed, students who did not rank (or were not ranked by) any exam school are dropped, offers not on the preference list are excluded, and additional exclusions are applied through matching to Boston Public Schools and requiring observed outcomes such as MCAS test scores.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},270991,1789458987,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":39,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":36,"preview_page_count":4},1099523885336,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","Econometrica Supplementary Material  \nSUPPLEMENT TO “THE ELITE ILLUSION: ACHIEVEMENT EFFECTS AT BOSTON AND NEW YORK EXAM SCHOOLS”  \n(Econometrica, Vol. 82, No. 1, January 2013, 137–196)  \nBY ATILA ABDULKADIRO˘GLU, JOSHUA ANGRIST, AND PARAG PATHAK  \nThis document describes the processing steps from the original data files to the analysis files used in the main paper.  \nAPPENDIX C: BOSTON DATA  \nBOSTON PUBLIC SCHOOLS is the source for four data sets: the exam school application file, the enrollment file which contains student demographic and school attendance information, the Massachusetts Comprehensive Assessment System (MCAS) test score file, the College Board test file which contains PSAT, SAT, and AP scores, and data from the National Student Clearinghouse. This appendix describes these data sets and the procedures used to construct the analysis sample.  \nC.1. Sources  \nExam School Application File  \nThe exam school application file contains a record for each student consisting of a registration number, application year, grade, date ofbirth, preferences over three exam schools, and scores on the ISEE verbal, quantitative, reading, and math sections. Each record also includes the rank of each student by the exam schools on their preference list and the school where the student receivesan offer (if any) . This data set covers students in grades 7, 9, and 10 and application years 1999–2008. Since there are a small number of grade 10 applicants, we kept students applying for grades 7 and 9 only.  \nTable C.I indicates the steps involved in processing the exam application file. We excluded duplicate observations, applicants from private schools, and those who did not rank or were not ranked by any exam school. We also dropped students who obtained an offer at an exam school that is not on their preference list.  \nFor each applicant, the exam school application file indicates whether the student receives an offer at a school to which they’ve applied. For a given application year, grade, and school, we compute the lowest-ranked student to obtain an offer from that school. Each student is then coded as obtaining an offer at an exam school if her score is above this minimum cutoff for any school that is on her preference list.  \n© 2014 The Econometric Society DOI: 10.3982/ECTA10266  \nTABLE C.I  \nPROCESSING OF BOSTON EXAM SCHOOL APPLICATION DATAa  \n\n| Application Year | Total Number\u003Cbr>of Records\u003Cbr>(1) | Excluding\u003Cbr>Duplicate\u003Cbr>Observations\u003Cbr>(2) | Excluding\u003Cbr>Applicants\u003Cbr>From Private\u003Cbr>Schools\u003Cbr>(3) | Excluding\u003Cbr>Students Who\u003Cbr>Did Not Rank\u003Cbr>an Exam School\u003Cbr>(4) |  | Excluding\u003Cbr>Students Who\u003Cbr>Are Not Ranked\u003Cbr>by an Exam School\u003Cbr>(5) | Excluding\u003Cbr>Students Who\u003Cbr>Obtain an\u003Cbr>Offer at a\u003Cbr>School They\u003Cbr>Do Not Rank\u003Cbr>(6) |  | Excluding\u003Cbr>Students Not\u003Cbr>Matched to\u003Cbr>Boston Public\u003Cbr>Schools at Baseline\u003Cbr>(7) | Excluding\u003Cbr>Students\u003Cbr>Previously\u003Cbr>Enrolled in\u003Cbr>Exam School\u003Cbr>(8) | Excluding\u003Cbr>Students With\u003Cbr>No Observed\u003Cbr>Outcome\u003Cbr>MCAS\u003Cbr>Test Scores\u003Cbr>(9) |\n| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |\n|  |  |  |  | Panel A. 7th Grade Applicants |  |  |  |  |  |  |  |\n| 1999 | 2,353 | 2,353 | 1,353 | 1,307 | 1,307 |  |  | 1,307 | 1,180 | 1,180 | 1,000 |\n| 2000 | 2,283 | 2,283 | 1,252 | 1,165 | 1,165 |  |  | 1,165 | 1,125 | 1,125 | 1,032 |\n| 2001 | 2,317 | 2,317 | 1,299 | 1,196 | 1,196 |  |  | 1,196 | 1,193 | 1,193 | 1,100 |\n| 2002 | 2,365 | 2,365 | 1,304 | 1,237 | 1,236 |  |  | 1,236 | 1,235 | 1,235 | 1,118 |\n| 2003 | 2,494 | 2,494 | 1,386 | 1,251 | 1,251 |  |  | 1,251 | 1,240 | 1,240 | 1,127 |\n| 2004 | 2,217 | 2,217 | 1,206 | 1,174 | 1,174 |  |  | 1,174 | 1,172 | 1,172 | 1,083 |\n| 2005 | 2,062 | 2,062 | 1,116 | 1,105 | 1,105 |  |  | 1,099 | 1,095 | 1,095 | 1,001 |\n| 2006 | 2,079 | 2,079 | 1,184 | 1,166 | 1,166 |  |  | 1,161 | 1,158 | 1,158 | 1,052 |\n| 2007 | 1,992 | 1,992 | 1,086 | 1,081 | 1,080 |  |  | 1,073 | 1,068 | 1,068 | 974 |\n| 2008 | 1,874 | 1,874 | 1,050 | 1,049 | 1,040 | ","cbCaiqsnnzcTsBxd","https://ap.wps.com/l/cbCaiqsnnzcTsBxd","pdf",82244,16,"English","# Appendix C: Boston Data\n## Sources\n## Exam School Application File\n## Enrollment File\n## MCAS Test File","[{\"question\":\"What data sources are included in Appendix C for Boston?\",\"answer\":\"It uses four main datasets: the exam school application file, the enrollment file, the MCAS test score file, and the College Board test file (PSAT, SAT, AP), along with data from the National Student Clearinghouse.\"},{\"question\":\"How is the exam application file used to determine whether a student receives an offer?\",\"answer\":\"For each application year, grade, and school, the appendix defines the lowest-ranked student who receives an offer. A student is coded as obtaining an offer if their exam score is above the minimum cutoff for any school on their preference list.\"},{\"question\":\"What filtering steps are applied when constructing the analysis sample from raw application data?\",\"answer\":\"Duplicate observations are excluded, applicants from private schools are removed, students who did not rank (or were not ranked by) any exam school are dropped, offers not on the preference list are excluded, and additional exclusions are applied through matching to Boston Public Schools and requiring observed outcomes such as MCAS test scores.\"}]","Appendix C - Boston Data - Exam Application Data and Analysis Sample Processing | PDF"]