Top 100 Contractors in NAICS 6117: Educational Support Services, FY2023

Name: Top 100 Contractors in NAICS 6117: Educational Support Services, FY2023
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2022 – Sep 30, 2023 Code page on GovTribe

The top 10 won 45% of FY2023 NAICS 6117 contract dollars

Contract obligations: $607,473,742 Net of deobligations, by contracts coded NAICS 6117 or a code under it
Contractors: 892 Parent companies with an obligation
Largest contractor: Institute of International Education Inc. $73.4 million, 11.6% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Institute of International Education Inc. Top agencies DHRA (Defense Human Resources Activity)	$73,424,536	11.6%	Rank history: #1 in FY2021, #2 in FY2022, #1 in FY2024 and #2 in FY2025; up 1 since FY2022.
2	Human Resources Research Organization (Humrro) Top agencies DHRA (Defense Human Resources Activity) DOS (Department of State)	$40,850,524	6.5%	Rank history: #2 in FY2021, #1 in FY2022, #2 in FY2024 and #1 in FY2025; down 1 since FY2022.
3	Guardians of Honor, LLC Top agencies NASA (National Aeronautics and Space Administration)	$32,780,365	5.2%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2024 and #3 in FY2025; new.
4	Global Business Solutions, Llc. Top agencies USAF (Department of the Air Force)	$27,857,465	4.4%	Rank history: not on the FY2021 list, #4 in FY2022, #9 in FY2024 and #8 in FY2025; unchanged since FY2022.
5	Indtai Inc Top agencies Army (Department of the Army)	$26,514,622	4.2%	Rank history: #4 in FY2021, #5 in FY2022, #3 in FY2024 and #4 in FY2025; unchanged since FY2022.
6	Victor 12, Inc. Top agencies VA (Department of Veterans Affairs)	$22,723,036	3.6%	Rank history: #11 in FY2021, #11 in FY2022, #6 in FY2024 and #6 in FY2025; up 5 since FY2022.
7	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$17,765,864	2.8%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2024 and not on the FY2025 list; new.
8	Flatter, Inc. Top agencies USAF (Department of the Air Force)	$14,395,050	2.3%	Rank history: #8 in FY2021, #9 in FY2022, #22 in FY2024 and not on the FY2025 list; up 1 since FY2022.
9	GP Strategies Corporation Top agencies Army (Department of the Army)	$14,016,162	2.2%	Rank history: #3 in FY2021, #3 in FY2022, #7 in FY2024 and not on the FY2025 list; down 6 since FY2022.
10	Network & Simulation Technologies Inc Top agencies Navy (Department of the Navy)	$11,530,232	1.8%	Rank history: #9 in FY2021, #6 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
11	Cybermedia Technologies LLC 2 awardees Top agencies OSD (Office of the Secretary of Defense)	$11,432,781	1.8%	Rank history: #10 in FY2021, #7 in FY2022, #8 in FY2024 and #7 in FY2025; down 4 since FY2022.
12	Huntington Ingalls Industries, Inc. Through HII Mission Technologies Corp Top agencies DSCA (Defense Security Cooperation Agency) OSD (Office of the Secretary of Defense)	$9,465,485	1.5%	Rank history: #44 in FY2021, #21 in FY2022, #16 in FY2024 and #22 in FY2025; up 9 since FY2022.
13	L2 Defense Inc. 2 awardees Top agencies Army (Department of the Army)	$8,722,051	1.4%	Rank history: #13 in FY2021, #18 in FY2022, #10 in FY2024 and #16 in FY2025; up 5 since FY2022.
14	Board of Governers State University System of Florida 3 awardees, including Florida State University, University of West Florida and University of Central Florida Research Foundation, Inc. Top agencies ED (Department of Education) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$8,668,884	1.4%	Rank history: #25 in FY2021, #23 in FY2022, #18 in FY2024 and not on the FY2025 list; up 9 since FY2022.
15	American Council On the Teaching of Foreign Languages, Inc. 2 awardees, including Actfl Professional Services, Llc. Top agencies Army (Department of the Army) DODEA (Department of Defense Education Activity)	$7,342,999	1.2%	Rank history: #29 in FY2021, #61 in FY2022, #11 in FY2024 and #11 in FY2025; up 46 since FY2022.
16	Pearson PLC Through NCS Pearson Inc. Top agencies DOI (Department of the Interior) DODEA (Department of Defense Education Activity)	$7,201,817	1.1%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2024 and #14 in FY2025; new.
17	Wested Top agencies ED (Department of Education) DOI (Department of the Interior)	$7,078,467	1.1%	Rank history: #20 in FY2021, #14 in FY2022, #21 in FY2024 and #29 in FY2025; down 3 since FY2022.
18	Tgb3 Enterprises LLC Top agencies DHS (Department of Homeland Security)	$6,674,684	1.1%	Rank history: #24 in FY2021, #25 in FY2022 and not on the FY2024–FY2025 lists; up 7 since FY2022.
19	American Institutes for Research In the Behavioral Sciences Top agencies ED (Department of Education)	$6,658,000	1.1%	Rank history: #7 in FY2021, #22 in FY2022, #20 in FY2024 and #38 in FY2025; up 3 since FY2022.
20	Research Triangle Institute Top agencies USAID (US Agency for International Development)	$6,454,823	1.0%	Rank history: #33 in FY2021, #27 in FY2022, #19 in FY2024 and not on the FY2025 list; up 7 since FY2022.
21	Education Development Center, Inc. Top agencies ED (Department of Education) DOJ (Department of Justice) USAID (US Agency for International Development)	$6,256,264	1.0%	Rank history: #5 in FY2021, #10 in FY2022, #36 in FY2024 and not on the FY2025 list; down 11 since FY2022.
22	Nonpublic Educational Services, Inc. Top agencies ED (Department of Education)	$6,110,349	1.0%	Rank history: #27 in FY2021, #12 in FY2022, #12 in FY2024 and #15 in FY2025; down 10 since FY2022.
23	Techwerks LLC Top agencies VA (Department of Veterans Affairs)	$6,089,260	1.0%	Rank history: #6 in FY2021, #20 in FY2022 and not on the FY2024–FY2025 lists; down 3 since FY2022.
24	II Corps Consultants Inc Top agencies Navy (Department of the Navy)	$5,944,338	0.9%	Rank history: #39 in FY2021, #30 in FY2022, #14 in FY2024 and #76 in FY2025; up 6 since FY2022.
25	Mathematica Inc Top agencies ED (Department of Education)	$5,504,273	0.9%	Rank history: #30 in FY2021, #28 in FY2022, #27 in FY2024 and not on the FY2025 list; up 3 since FY2022.
26	Mcrel International Top agencies ED (Department of Education)	$5,272,658	0.8%	Rank history: #34 in FY2021, #29 in FY2022, #28 in FY2024 and not on the FY2025 list; up 3 since FY2022.
27	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies USAF (Department of the Air Force)	$5,218,966	0.8%	Rank history: #22 in FY2021, #26 in FY2022, #24 in FY2024 and #31 in FY2025; down 1 since FY2022.
28	Nisga'A TEK LLC Top agencies Army (Department of the Army)	$5,090,529	0.8%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
29	Coretech Global LLC Top agencies VA (Department of Veterans Affairs)	$4,966,810	0.8%	Rank history: not on the FY2021–FY2022 lists, #13 in FY2024 and #28 in FY2025; up 81 since FY2022.
30	Serco North America (Holdings) Inc Through Serco Inc. Top agencies GAO (Government Accountability Office) Army (Department of the Army)	$4,768,463	0.8%	Rank history: #41 in FY2021, #41 in FY2022 and not on the FY2024–FY2025 lists; up 11 since FY2022.
31	The 21St Century Partnership for Stem Education Top agencies USAID (US Agency for International Development)	$4,580,943	0.7%	Rank history: #42 in FY2021, #32 in FY2022 and not on the FY2024–FY2025 lists; up 1 since FY2022.
32	American Council On Education Top agencies DHRA (Defense Human Resources Activity) DHS (Department of Homeland Security) OSD (Office of the Secretary of Defense)	$3,618,317	0.6%	Rank history: #28 in FY2021, #31 in FY2022, #30 in FY2024 and #19 in FY2025; down 1 since FY2022.
33	Jackson Pierce Public Affairs Inc. Top agencies USDA (Department of Agriculture)	$3,560,618	0.6%	Rank history: not on the FY2021 list, #58 in FY2022 and not on the FY2024–FY2025 lists; up 25 since FY2022.
34	The Dcode Group Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$3,462,740	0.5%	Rank history: not on the FY2021 list, #94 in FY2022, #55 in FY2024 and #64 in FY2025; up 60 since FY2022.
35	The Chenega Corporation Through Chenega Analytic Business Solutions, LLC Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$3,295,979	0.5%	Rank history: #79 in FY2021, #53 in FY2022 and not on the FY2024–FY2025 lists; up 18 since FY2022.
36	NCS Pearson Inc. 4 awardees, including Ged Testing Service LLC Top agencies DOJ (Department of Justice) DCSA (Defense Counterintelligence and Security Agency) OSD (Office of the Secretary of Defense)	$3,235,901	0.5%	Rank history: #12 in FY2021, #13 in FY2022 and not on the FY2024–FY2025 lists; down 23 since FY2022.
37	Kratos Defense & Security Solutions, Inc. Through Kratos Technology & Training Solutions, Inc. Top agencies USAF (Department of the Air Force)	$3,210,810	0.5%	Rank history: #67 in FY2021, #52 in FY2022 and not on the FY2024–FY2025 lists; up 15 since FY2022.
38	Lifeskills Connection Inc. Top agencies USDA (Department of Agriculture)	$3,170,609	0.5%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
39	Southern Association of Colleges and Schools Commission on C Through Cognia Inc. Top agencies DODEA (Department of Defense Education Activity) DOI (Department of the Interior)	$3,107,404	0.5%	Rank history: #85 in FY2021, #48 in FY2022 and not on the FY2024–FY2025 lists; up 9 since FY2022.
40	University of New Mexico 2 awardees Top agencies DOI (Department of the Interior)	$3,091,566	0.5%	Rank history: #38 in FY2021, #35 in FY2022 and not on the FY2024–FY2025 lists; down 5 since FY2022.
41	JLC Solutions LLC Top agencies HHS (Department of Health and Human Services) Treasury (Department of the Treasury)	$3,011,155	0.5%	Rank history: not on the FY2021 list, #54 in FY2022, #44 in FY2024 and #56 in FY2025; up 13 since FY2022.
42	Ibex It Business Experts LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$2,984,765	0.5%	Rank history: #45 in FY2021, #49 in FY2022, #68 in FY2024 and #54 in FY2025; up 7 since FY2022.
43	Stichting I.e.a. Secretariaat Nederland Top agencies ED (Department of Education)	$2,911,726	0.5%	Rank history: #69 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; returned.
44	Techglobal Inc 2 awardees Top agencies Commerce (Department of Commerce)	$2,658,095	0.4%	Rank history: #61 in FY2021, #38 in FY2022, #86 in FY2024 and #36 in FY2025; down 6 since FY2022.
45	Aztec Software, LLC Top agencies DOJ (Department of Justice)	$2,577,389	0.4%	Rank history: #46 in FY2021, #47 in FY2022 and not on the FY2024–FY2025 lists; up 2 since FY2022.
46	Applied Training Solutions, LLC Top agencies Army (Department of the Army)	$2,478,925	0.4%	Rank history: #97 in FY2021, #50 in FY2022, #50 in FY2024 and #27 in FY2025; up 4 since FY2022.
47	Mackin Book Company Top agencies DODEA (Department of Defense Education Activity)	$2,372,738	0.4%	Rank history: not on the FY2021 list, #34 in FY2022, #49 in FY2024 and #41 in FY2025; down 13 since FY2022.
48	College Entrance Examination Board 2 awardees Top agencies DHRA (Defense Human Resources Activity) DHS (Department of Homeland Security) Navy (Department of the Navy)	$2,360,406	0.4%	Rank history: #43 in FY2021, #60 in FY2022, #64 in FY2024 and #21 in FY2025; up 12 since FY2022.
49	Solers Research Group Inc. Top agencies Navy (Department of the Navy)	$2,222,752	0.4%	Rank history: not on the FY2021–FY2022 lists, not on the FY2024 list and #89 in FY2025; up 71 since FY2022.
50	Gartner, Inc. 2 awardees, including Personnel Decisions Research Institutes, LLC Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury) CFPB (Consumer Financial Protection Bureau)	$2,130,823	0.3%	Rank history: #77 in FY2021, #92 in FY2022 and not on the FY2024–FY2025 lists; up 42 since FY2022.
51	Act Inc. Top agencies DOJ (Department of Justice) USDA (Department of Agriculture) ED (Department of Education)	$1,983,948	0.3%	Rank history: not on the FY2021 list, #39 in FY2022 and not on the FY2024–FY2025 lists; down 12 since FY2022.
52	Oneida Nation Through Sustainment & Restoration Services, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,967,830	0.3%	Rank history: #55 in FY2021, #44 in FY2022 and not on the FY2024–FY2025 lists; down 8 since FY2022.
53	Livingworks Education USA Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHS (Department of Homeland Security)	$1,966,869	0.3%	Rank history: #90 in FY2021, #59 in FY2022, not on the FY2024 list and #45 in FY2025; up 6 since FY2022.
54	Catapult Learning Patriot LLC Top agencies DODEA (Department of Defense Education Activity)	$1,928,177	0.3%	Rank history: not on the FY2021 list, #83 in FY2022 and not on the FY2024–FY2025 lists; up 29 since FY2022.
55	Advanced Technology Logistics, Inc. Top agencies Army (Department of the Army)	$1,928,014	0.3%	Rank history: #49 in FY2021, #57 in FY2022, not on the FY2024 list and #74 in FY2025; up 2 since FY2022.
56	Softek Services Inc Top agencies DHS (Department of Homeland Security)	$1,924,071	0.3%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2024 and #58 in FY2025; new.
57	EAB Global Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DHS (Department of Homeland Security)	$1,893,727	0.3%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2024 and not on the FY2025 list; up 401 since FY2022.
58	Web Business Solutions Inc. Top agencies Navy (Department of the Navy)	$1,863,914	0.3%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2024 and #62 in FY2025; new.
59	Wolf Lake Services, LLC Top agencies USAID (US Agency for International Development)	$1,805,000	0.3%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2024 and not on the FY2025 list; new.
60	Snap, Inc. Top agencies DHS (Department of Homeland Security)	$1,747,194	0.3%	Rank history: #40 in FY2021, #42 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
61	Second Avenue Software, Inc. Top agencies Commerce (Department of Commerce)	$1,676,307	0.3%	Rank history: #64 in FY2021, #69 in FY2022, #57 in FY2024 and not on the FY2025 list; up 8 since FY2022.
62	C2 Technologies, Inc. Top agencies USAF (Department of the Air Force)	$1,568,008	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
63	GBX Consultants, Inc. Top agencies USDA (Department of Agriculture)	$1,520,331	0.2%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2024 and not on the FY2025 list; new.
64	Vectrona-Ita Solutions LLC Top agencies Navy (Department of the Navy)	$1,514,476	0.2%	Rank history: #54 in FY2021, #63 in FY2022 and not on the FY2024–FY2025 lists; down 1 since FY2022.
65	Program Management and Technology Services, Inc. Top agencies USAF (Department of the Air Force)	$1,479,102	0.2%	Rank history: #81 in FY2021, #76 in FY2022, #67 in FY2024 and #50 in FY2025; up 11 since FY2022.
66	Arrow Security & Training LLC Top agencies Army (Department of the Army)	$1,445,975	0.2%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2024 and #60 in FY2025; new.
67	National Center for Families Learning Inc. Top agencies DOI (Department of the Interior)	$1,428,144	0.2%	Rank history: #53 in FY2021, #62 in FY2022, #65 in FY2024 and #85 in FY2025; down 5 since FY2022.
68	Solutions for Information Design, Inc. Top agencies Army (Department of the Army)	$1,406,299	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2024 and #53 in FY2025; new.
69	Digital Promise Global Top agencies NSF (National Science Foundation)	$1,400,000	0.2%	Rank history: not on the FY2021 list, #43 in FY2022, #56 in FY2024 and not on the FY2025 list; down 26 since FY2022.
70	Actualized Business Solutions Inc Top agencies USAF (Department of the Air Force)	$1,378,659	0.2%	Rank history: #60 in FY2021, #37 in FY2022, #40 in FY2024 and #25 in FY2025; down 33 since FY2022.
71	A P Ventures, LLC Top agencies USAF (Department of the Air Force)	$1,361,567	0.2%	Rank history: #47 in FY2021, #64 in FY2022, #72 in FY2024 and #63 in FY2025; down 7 since FY2022.
72	World Institute of Leadership and Learning, Ltd Top agencies HHS (Department of Health and Human Services) CFPB (Consumer Financial Protection Bureau)	$1,301,764	0.2%	Rank history: #78 in FY2021, not on the FY2022 list, #98 in FY2024 and not on the FY2025 list; returned.
73	Vs4S LLC Top agencies HHS (Department of Health and Human Services)	$1,299,767	0.2%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2024 and not on the FY2025 list; new.
74	American Heart Association, Inc. Top agencies VA (Department of Veterans Affairs)	$1,279,692	0.2%	Rank history: #58 in FY2021, #70 in FY2022, #77 in FY2024 and #91 in FY2025; down 4 since FY2022.
75	Parents AS Teachers National Center, Inc. Top agencies DOI (Department of the Interior)	$1,265,320	0.2%	Rank history: #62 in FY2021, #71 in FY2022, #75 in FY2024 and #95 in FY2025; down 4 since FY2022.
76	The Trustees of Columbia University In the City of New York 2 awardees Top agencies HHS (Department of Health and Human Services)	$1,202,334	0.2%	Rank history: #63 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 84 since FY2022.
77	Stemised Inc. Top agencies Commerce (Department of Commerce)	$1,197,110	0.2%	Rank history: not on the FY2021–FY2022 lists, #73 in FY2024 and not on the FY2025 list; up 42 since FY2022.
78	Cherokee Nation Defense Solutions LLC Top agencies Army (Department of the Army)	$1,193,132	0.2%	Rank history: not on the FY2021 list, #74 in FY2022 and not on the FY2024–FY2025 lists; down 4 since FY2022.
79	Echelon Services, LLC Top agencies HHS (Department of Health and Human Services)	$1,161,631	0.2%	Rank history: not on the FY2021 list, #73 in FY2022, #82 in FY2024 and #71 in FY2025; down 6 since FY2022.
80	Tribal TECH LLC Top agencies DOI (Department of the Interior) ED (Department of Education) DOJ (Department of Justice)	$1,069,268	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 221 since FY2022.
81	Hawaiian Native Corporation Through Aktarius LLC Top agencies Army (Department of the Army)	$1,039,682	0.2%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
82	Supply Chain Vistas Inc. Top agencies VA (Department of Veterans Affairs)	$1,038,748	0.2%	Rank history: #72 in FY2021, #78 in FY2022, #95 in FY2024 and not on the FY2025 list; down 4 since FY2022.
83	Ethos Systems, Inc. Top agencies USAF (Department of the Air Force)	$1,011,355	0.2%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2024 and #39 in FY2025; up 140 since FY2022.
84	ABK Ventures Inc. Top agencies VA (Department of Veterans Affairs)	$1,011,212	0.2%	Rank history: not on the FY2021 list, #82 in FY2022, #71 in FY2024 and #52 in FY2025; down 2 since FY2022.
85	Infinisource Consulting Solutions Inc. Top agencies USAF (Department of the Air Force)	$1,010,515	0.2%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2024 and not on the FY2025 list; new.
86	Creative Pathways Inc.	$918,168	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
87	ITI Solutions, Inc. Top agencies USAF (Department of the Air Force)	$909,394	0.1%	Rank history: #88 in FY2021, #87 in FY2022 and not on the FY2024–FY2025 lists; unchanged since FY2022.
88	Arctic Slope Regional Corporation Through Asrc Federal Cyber, LLC Top agencies Navy (Department of the Navy)	$852,416	0.1%	Rank history: #57 in FY2021, #51 in FY2022, not on the FY2024 list and #82 in FY2025; down 37 since FY2022.
89	X Corp Solutions Inc. Top agencies Navy (Department of the Navy)	$852,206	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
90	Teaching Strategies LLC Top agencies DODEA (Department of Defense Education Activity) DOI (Department of the Interior)	$846,889	0.1%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2024 and #32 in FY2025; up 48 since FY2022.
91	Youth Empowers Service LLC Top agencies Army (Department of the Army)	$846,780	0.1%	Rank history: not on the FY2021 list, #72 in FY2022, #81 in FY2024 and #61 in FY2025; down 19 since FY2022.
92	Alexton Incorporated Top agencies NASA (National Aeronautics and Space Administration)	$835,849	0.1%	Rank history: #84 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 9 since FY2022.
93	Chenega It Enterprise Services, LLC Top agencies DOI (Department of the Interior)	$821,717	0.1%	Rank history: #59 in FY2021, #75 in FY2022 and not on the FY2024–FY2025 lists; down 18 since FY2022.
94	Ahtna Netiye' Inc. Through Akhi, LLC Top agencies Army (Department of the Army)	$814,519	0.1%	Rank history: not on the FY2021 list, #19 in FY2022 and not on the FY2024–FY2025 lists; down 75 since FY2022.
95	Agovx LLC Top agencies Army (Department of the Army)	$765,729	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
96	BMK Ventures, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$731,050	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; new.
97	Knowledge Factor Inc. Top agencies VA (Department of Veterans Affairs)	$728,250	0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024–FY2025 lists; up 135 since FY2022.
98	Siegfried Kreth Top agencies Army (Department of the Army)	$727,398	0.1%	Rank history: #96 in FY2021, not on the FY2022 list and not on the FY2024–FY2025 lists; up 10 since FY2022.
99	Serco Inc Top agencies Army (Department of the Army)	$711,562	0.1%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2024 and #30 in FY2025; new.
100	Alta Language Services Inc. Top agencies Army (Department of the Army)	$705,092	0.1%	Rank history: #92 in FY2021, #89 in FY2022, #97 in FY2024 and #80 in FY2025; down 11 since FY2022.

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100 of 892 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 6117

Code	Net obligations	Largest contractor
61171 Educational Support Services	$607,473,742	Institute of International Education Inc.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $632 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2023 ran Oct 1, 2022 – Sep 30, 2023. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2022. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2022 takes the color of the rank change beside it.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 6117 contractors in FY2023?

1. Institute of International Education Inc. ($73.4M), 2. Human Resources Research Organization (Humrro) ($40.9M), 3. Guardians of Honor, LLC ($32.8M), 4. Global Business Solutions, Llc. ($27.9M), 5. Indtai Inc ($26.5M), 6. Victor 12, Inc. ($22.7M), 7. Chemonics International, Inc. ($17.8M), 8. Flatter, Inc. ($14.4M), 9. GP Strategies Corporation ($14M), 10. Network & Simulation Technologies Inc ($11.5M).

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