TABLE 1 : THE AGGREGATION OF FIELDS (CIP CODES) IN SEVIS DATA

TABLE 1 : THE AGGREGATION OF FIELDS (CIP CODES) IN SEVIS DATA Field Name 2010 CIP codes Eligibility Cycle Agricultural Business & Management 1.0101-1.0199 x Agricultural Production Operations 1.0301-1.0307, 1.0309-1.0399, 1.0401-1.0701 x Animal Sciences 1.0901-1.0907 2011 Food, Plant, and Soil Sciences 1.1001-1.1002, 1.1101-1.1106, 1.1201-1.1203 2011 Agriculture and related, other 1.0000, 1.0201-1.0299, 1.0801-1.0899, 1.9999 x Natural Resources Conversation 03.0101-03.0103, 03.0199 Environmental and Forest Science 03.0104, 03.0502, 03.0508-03.0509 2011 Natural Resources Management 03.0201-03.0204, 03.0206-03.0299 x Forestry, general 03.0501, 03.0506-03.0507, 03.0509-03.0599 x Natural Resources Other 03.9999, 03.0205, 01.0308, 01.0999, 01.1199 01.1299 Architecture and City Planning 04.0201, 04.0301 x Architectural, other 04.0401-04.0901, 04.0903-04.9999 x Area Studies 05.0101-05.0199 x Ethnic, Cultural minority, & Gender Studies 05.0200-05.9999 x Speech Communication 9.0101 x Mass Communication & Media Studies 09.0100, 09.0102-09.0199 x Journalism 09.0401-09.0499 x Radio and Television 09.0701, 09.0799 x Public Relations 9.0902 x Advertising 9.0903 x Other Applied Communication 09.0900-09.0901, 09.0904-09.0999 x Publishing 09.1001-09.9999 x Communication Technologies 10.0105-10.0303, 10.0305-10.9999 x Animation Technology & Digital Comm. 10.0304, 09.0702 Computer & Information Sciences, General 11.0101-11.0102, 11.0104 Computer Programmers & System Analyst 11.0201-11.0203, 11.0501 Information Technology 11.0103 Information Science 11.0401 Data Processing & Systems Networking 11.0301, 11.0802, 11.0901 Computer Science 11.0701 Computer Graphics, Web page and Modeling 11.0801, 11.0803-11.0804 Information System Management 11.1001-11.1006 Computer & Information Sciences, other 11.0199, 11.0299, 11.0899, 11.1099 Data Entry and Computer Support Services 11.0601, 11.9999 x Personal and Culinary Services 12.0301-12.9999 x Education, general 13.0101 x Curriculum, Administration, & Supervisor 13.0301-13.0499 x 1

Education Assessment & Technology 13.0501-13.0601 Special Education and Teaching 13.1001-13.1099 x Counseling & Personal Services 13.1101-13.1199 x Teacher Education, specific levels 13.0901, 13.1201-13.1299 x Teacher Education, specific subject areas 13.1301-13.1399 x Education, other 13.0201-13.0299, 13.0604-13.0699, 13.1501-13.1502, 13.9999 x Engineering, general 14.0101-14.0102 Aerospace Engineering 14.0201 Bioengineering and related Engr. 14.0501, 14.4301-14.4501 Chemical Engineering 14.0701-14.0702 Civil Engineering 14.0801-14.0805 Computer Engineering 14.0901-14.0903 Electrical, Electronics, and related Engr. 14.1001-14.1004, 14.4101, 14.4201 Environmental, Nuclear, Ocean Engr. 14.1401, 14.2201-14.2501, 14.3401, 14.3901 Materials Engineering and related Engr. 14.0601, 14.1801, 14.2001, 14.2101, 14.2801, 14.3201 Mechanical Engineering 14.1901 Industrial Engineering 14.3501 Systems and Operations Engineering 14.2701, 14.3601-14.3801 Engineering, miscellaneous 14.0301, 14.0401, 14.1101, 14.1201, 14.1301, 14.3301 Engineering, other 14.0799, 14.0899, 14.0999, 14.1099, 14.9999 Engineering Technology, general 15.0000 Architectural & Civil Engr. Techn. 15.0101-15.0201 Electric and Electromechanical Engr. Techn. 15.0301-15.0499, 15.1601 Industrial Production Technicians 15.0607-15.0616 Quality, Environmental Control, Safety Techn. 15.0501-15.0508, 15.0701-15.0704 Mechanical and related Eng. Techn. 15.0801-15.0805 Mining, Construction, & Petroleum Techn. 15.0901-15.0902, 15.1001, 15.1401 Surveying and Drafting 15.1102-15.1103, 15.1301-15.1306, 15.1501-15.1503 Computer Engineering Technicians 15.0201-15.0204 Technicians, other 15.0399, 15.0499, 15.0599, 15.0699, 15.0799, 15.0899, 15.0999, 15.1199, 15.1299, 15.1399, 15.1599, 15.9999 Foreign Languages, general 16.0101-16.0199 x Asian Languages 16.0300, 16.0399 x Romance Languages 16.0900-16.0999 x Other Languages 16.0201, 16.0400-16.0801, 16.1001-16.9999 x Family and Consumer Sciences, general 19.0000-19.0299 x Foods and Nutrition services 19.0501-19.0599 x Human Development and Family Studies 19.0701-19.0799 x 2

Apparel and Textiles 19.0901-19.0999 x Family and Consumer Sciences, other 19.0401-19.0499, 19.0601-19.0699, 19.9999 x Legal Profession and Studies 22.0101-22.9999 x English Language & Literature, general 23.0101 x Writing 23.1301-23.1399 x Literature and related 23.1401-23.9999 x Liberal Arts and Sciences 24.0101 x General Studies 24.0102 x Humanities 24.0103 x Liberal Arts & Humanities, other 24.0104 x Library Science 25.0101-25.9999 x Biology, general 26.0101 Biomedical & Pharmacology 26.0102, 26.1001-26.1007, 51.1401 Biochemistry 26.0201-26.0210 Cellular Biology and Anatomy 26.0401-26.0407 Microbiology 26.0501-26.0508 Botany and Zoology 26.0301-26.0308, 26.0502-26.0508 Physiology, Pathology, and related 26.0901-26.0912 Biomathematics & Biotechnology 26.1101-26.1104, 26.1201 Ecology and Population Biology 26.1301-26.1310 Genetics & Neuroanatomy 26.0801-26.0807, 26.1502-26.1504 Neuroscience 26.1501 2011 Biological Sciences, other 26.0299, 26.0399, 26.0499, 26.0599, 26.0799, 26.0899, 26.0999, 26.1099, 26.1199, 26.1399, 26.1599, 26.9999 Mathematics, general 27.0101-27.0103 Applied Mathematics 27.0301-27.0306 Statistic, general 27.0501-27.0503 Mathematics & Statistics, other 27.0199, 27.0399, 27.0599, 27.9999 Military Technologies 29.0201-29.9999 Multidisc. Biological, Physical, Natural Sci. 30.0101, 30.1001, 30.1801, 30.3201 2011 Multidisc. Computer, Cognitive, System Sci. 30.0601, 30.0801, 30.2501, 13.0603 2011 Nutrition Sciences 30.1901 2011 International, Cultural and Diversity Studies 30.2001, 30.0501, 30.2101-30.2301 x Other Multidisciplinary, (eligible) 30.1701, 30.2701, 30.3001, 30.3101, 30.3301 Other Multidisciplinary, (ineligible) 30.1101-30.1601, 30.9999 x Parks, Recreation, & Leisure, general 31.0101-31.0399 x Health, Physical Education, & fitness, general 31.0501, 31.0507-31.9999 x Sports and Fitness Administration 31.0504 x Kinesiology and Exercise Science 31.0505 x Philosophy 38.0001-38.0199, 38.9999 x Religion Studies 38.0201-38.0299 x Theology and Religious Vocations 39.0201-39.9999 x Astronomy and Atmospheric Sciences 40.0101, 40.0201-40.0203, 40.0401-40.0404 3

Chemistry and Material Science Technicians 40.0501-40.0511, 40.1001-40.1002,41.0000-41.0101, 41.0204-41.0205, 41.0301 Geological and Earth Sciences 40.0601-40.0607 Physics 40.0801-40.0810 Physical sciences, other 40.0299, 40.0499, 40.0599, 40.0699, 40.0899, 40.1099, 40.9999, 41.0299, 41.0399, 41.9999, 49.0101 Psychology, general 42.0101, 42.9999 x Research & Experimental Psychology 42.2701-42.2709, 43.0106, 45.0702 2011 Clinical, Counseling, & Applied Psychology 42.2801, 42.2899 x Criminal Justice & Law Enforcement 43.0103 x Criminal Justice & Safety Studies 43.0104 x Forensic Science 43.0106, 45.0702 2011 Homeland Security & Law enforcement, other 43.0102, 43.0107-43.9999 x Public Administration 44.0401 x Public Policy Analysis 44.0501-44.0599 x Social Work 44.0701-44.0799 x Public Admin. and Social Work, other 44.0000-44-0201, 44.99999 x Social Sciences, general 45.0101-45.0102 x Anthropology 45.0201-45.0299 x Economics 45.0601-45.0602, 45.0604-45.0699 x Geography 45.0701-45.0799 x International Relations 45.0901-45.0999 x Political Science 45.1001-451099 x Sociology 45.1101 x Social Sciences, other (eligible) 45.0603, 45.0301, 43.0116, 42.2799, 4.0902, 52.1399 Social Sciences, other 45.0401, 45.0501, 45.1201-45.9999 x Mechanics, Transportation, Materials Moving 47.0000-47.9999, 49.0102-49.9999 x Visual, Performing Arts & Dance 50.0101-50.0399, x Commercial and Advertising Art 50.0402 x Design and Applied Arts 50.0401, 50.0404-50.0499 x Drama and Theatre Arts 50.0501-50.0599 x Film, Video, and Photographic Arts 50.0601-50.0699 x Art and Art studies, general 50.0701, 50.0704-50.0799 x Fine and Studio Arts 50.0702-50.0703 x Music 50.0901-50.0999 x Arts, other 50.0201, 50.1001-50.9999 x Communication Disorder Sciences 51.0201-51.0299 x Dental Studies 51.0401-51.0699 x Health/ Health Care Administration 51.0701 x Hospital and Facility Management 51.0702-51.0799 x Allied Health, Treatment and Assisting 51.0801-51.09999 x 4

Clinical Laboratory Technicians 51.1002, 51.1005 Mental and Social Health services 51.1501-51.1599 x Pharmaceutical Sciences 51.2001-51.2002, 51., 51.20011-51.2099 x Drug Design 51.2003-51.2005, 51.2706 2011 Public Health 51.2201, 51.2206-51.2299 x Rehabilitation and Therapy 51.2301-51.2399 x Nursing 51.3801-51.3899 x Health, other (eligible) 51.2006-51.2010, 51.2202, 512205, 51.2502-51.2506, 51.2510-51.2511 Health, other (non-eligible) 51.1001, 51.1003-51.1004, 51.1006-51.1099, 51.1101-51.1199, 51.1201, 51.1701-51.1901, 51.2101 Business/Commerce, general 52.0101 x Business Administration, general 52.0201 x Business Management, other 52.0202-52.0299 x Accounting and related 52.0301-52.0399 x Business Economics 52.0601 x Finance 52.0801-52.0899 x Hospitality Administration 52.0901-52.0999 x Human Resources 52.1001-52.1099 x International Business 52.1101 x Management Information Systems 52.1201-52.1299 x Management Science 52.1301-52.1302 2011 Actuarial Science 52.1304 Marketing 52.1401-52.1409 x Sales Operations 52.1801-52.1899 x x Business, others 52.0401-52.0501, 52.0701-52.0799, 52.1501-52.1701, 52.1901-52.9999 x History 54.0101-54.9999 x Notes: This table displays the aggregation of field codes in the analysis with SEVIS data. The first two columns show the aggregated category and associated 6-digit CIP codes. The last column shows whether each field is eligible for the OPT extension, and, if so, which year the field became eligible for the extension. 5

TABLE 2 : THE AGGREGATION OF FIELDS IN ACS Field Name Codes in ACS (IPUMS) Agriculture 1100-1101, 1199, 1302 Agriculture and Environmental Sciences 1103-1106, 1301, 1303 Architecture 1401 Area, Ethnic, and Civilization Studies 1501 Communications 1901-2001 Computer and Information Systems 2100-2102 Education 2301-2399 Aerospace Engineering 2401 Chemical Engineering 2505 Civil Engineering 2403-2406 Electrical Engineering 2407-2408 Industrial and Manufacturing Engineering 2412 Mechanical Engineering 2414 Engineering, other 2402, 2404, 2409-2411, 2413, 2415-2499 Engineering Technologies 2500-2599, 3801, 5102, 5601-5901 Linguistic 2600-2603 English Language, Literature, and Composition 3200-3302 Liberal Arts and Humanities 3401-3402 Biology 3600 Miscellaneous Biology 3601-3699 Mathematics & Statistics 3700-3702 Multi-disciplinary Sciences 4000-4008 Physical Fitness, Parks, Recreation, and Leisure 4101, 2201 Philosophy, Religious Studies, and Theology 4801-4901 Chemistry 5003 Physics 5001-5007 Physical Sciences, other 5000, 5002, 5004-5006, 5008 Psychology 5200-5299 Criminal Justice and Fire Protection 5301 Public Affairs, Policy, and Social Work 5400-5499 Economics 5501, 1102 Sociology 5502-5503, 5507 Political Science and Government 5505-5506 Social Science, other 5500, 5504, 3501, 5599 Arts 6000-6099 Nursing 6107 6

General Medical and Health Services 6100-6106, 6108-6199 General Business 6200 Accounting 6201 Business Management and Administration 6203 Marketing and Marketing Research 6206 Finance 6207 Miscellaneous Business 6202, 6204, 6205, 6209-6299 History 6402-6403 Notes: This table displays the aggregation of field codes in the analysis with ACS data. I employ slightly more aggregated grouping in the regressions at the doctoral level due to sample size restrictions. More specifically, I combine agriculture, criminal justice and fire protection, public affairs, policy, and social work, and physical fitness, parks, recreation, and leisure fields under one aggregate category; linguistic with English language, literature, and composition; liberal arts and humanities with social sciences, other; general business, accounting, business management and administration, marketing and marketing research, finance, and miscellaneous business under one aggregate category of business related fields; and aerospace, industrial, and civil engineering and engineering technologies under the field of engineering, other. 7