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Organization	Location	Revenue	Expenses	Assets	Program	Fundr. cost	Employees	Type
Ohio High School Athletic Association To serve our member schools and enrich interscholastic opportunities for students. 31-4355728 · FY2024	Columbus, OH	$24.5M	$25.6M	$22.8M	92%	0%	71	501(c)(3)
Wisconsin Interscholastic Athletic Association To organize, develop, direct and control INTERSCHOLASTIC ATHLETIC programs. 39-0886387 · FY2024	Stevens Point, WI	$12.9M	$11.8M	$12.9M	95%	0%	23	501(c)(3)
N J State Interscholastic Athletic Association The purpose of the organization is to foster and develop amateur athletics among secondary schools in nj, to… 21-0638152 · FY2024	Robbinsville, NJ	$5.9M	$5.6M	$5.5M	80%	0%	17	501(c)(3)
New Mexico Activities Association Encouraging, organizing, directing, and regulating interscholastic athletic and educational ACTIVITIES in the… 85-6000704 · FY2024	Albuquerque, NM	$4.4M	$4.6M	$3.9M	87%	1%	15	501(c)(3)
Idaho High School Activities Association INC The mission of the IDAHO HIGH SCHOOL ACTIVITIES ASSOCIATION is to coordinate, supervise, and direct… 82-0201587 · FY2024	Boise, ID	$3.0M	$3.1M	$2.5M	60%	0%	6	501(c)(3)
Nevada Interscholastic Activities Association To promote, control, supervise and regulate all athletic and other INTERSCHOLASTIC events in public high… 88-0115760 · FY2024	Sparks, NV	$2.7M	$2.6M	$1.0M	50%	0%	—	501(c)(3)
Interscholastic League of Honolulu The objective of the LEAGUE is to foster INTERSCHOLASTIC athletic activities that contribute to the… 90-0657408 · FY2023	Honolulu, HI	$2.2M	$2.1M	$417.3K	88%	0%	90	501(c)(3)
Washington Technology Student Association Our mission is to provide middle and high school students in the state of Washington with opportunities to… 20-3117296 · FY2024	Goldendale, WA	$2.1M	$2.0M	$311.2K	100%	0%	2	501(c)(3)
Wyoming High School Activities Association To coordinate the efforts of the member schools toward the ultimate objectives of interscholastic ACTIVITIES. 83-0167128 · FY2024	Casper, WY	$2.0M	$1.7M	$3.5M	75%	0%	7	501(c)(3)
New Hampshire Interscholastic Athletic Association INC Operations of state wide INTERSCHOLASTIC activities involving member schools and their students 02-0234046 · FY2024	Concord, NH	$1.7M	$1.5M	$2.6M	80%	0%	8	501(c)(3)
Montana High School Association To assure that the membership is provided with leadership and support in advancing equitable mhsa… 81-0232126 · FY2023	Helena, MT	$1.6M	$1.2M	$3.6M	31%	0%	7	501(c)(3)
Washington Officials Association The purpose of the woa is to provide qualified OFFICIALS for wiaa sanctioned regular season and post-season… 91-2004180 · FY2023	Renton, WA	$1.1M	$941.9K	$1.6M	77%	0%	—	501(c)(3)
The Association of Independent Schools of Greater Washington Fostering of high professional standards and sound educational practices at and among its members 52-1241780 · FY2024	Washington, DC	$1.0M	$949.7K	$1.3M	91%	3%	3	501(c)(3)
Texas High School Athletic Directors Association Improve and preserve the educational aspects of interscholastic athletics and its administration. 35-2439498 · FY2023	Texas City, TX	$915.7K	$1.0M	$642.4K	31%	0%	—	501(c)(3)
Northwest Interscholastic Activities Association INTERSCHOLASTIC activity support. 91-1441975 · FY2024	Burlington, WA	$785.2K	$814.9K	$73.3K	89%	0%	—	501(c)(3)
Michigan Inter-Scholatic Athletic Administrators Association Miaaa The mission is to: 1. Encourage educational agencies to respect the concept that interscholastic athletics is… 38-3070177 · FY2024	Frankfort, MI	$689.6K	$600.6K	$293.7K	60%	0%	—	501(c)(3)
Washington Finance Officers Association To promote excellence in governmental finance through leadership, education, and communication for the public… 94-3135116 · FY2024	Wilsonville, OR	$674.6K	$542.3K	$604.9K	72%	0%	—	501(c)(3)
Washington School Counselorassociation The Washington School Counselor Associations mission is to promote best practices in, and advocate for… 26-0370293 · FY2024	Auburn, WA	$567.4K	$547.8K	$502.6K	96%	0%	—	501(c)(3)
Washington Recreation & Park Association Facilitate connections,advocate for professionals and their agencies,and provide robust learning and skill… 91-1271983 · FY2023	Seattle, WA	$517.6K	$462.8K	$541.5K	58%	0%	—	501(c)(3)
North Central Washington Activities Association Promotion and regulation of interscholastic ACTIVITIES between 121 member schools. 91-1109065 · FY2024	Zillah, WA	$508.6K	$642.9K	$183.2K	81%	0%	—	501(c)(3)
Washington Association for Bilingual Education To promote the philosophy and practice of BILINGUAL and multicultural EDUCATION in WASHINGTON schools and… 91-1395104 · FY2024	Entiat, WA	$488.9K	$475.1K	$322.4K	96%	0%	—	501(c)(3)
Sea-King District of the Washington Interscholastic Activities Assn Sea-King District 2 of the Washington Interscholastic Activities Association plans, supervises, and… 91-1176132 · FY2024	Bellevue, WA	$462.9K	$500.5K	$76.6K	73%	0%	—	501(c)(3)
Lake Washington High School Booster Club To provide support for LAKE WASHINGTON HIGH SCHOOL student athletics and other student interscholastic… 20-3440935 · FY2023	Kirkland, WA	$449.0K	$418.4K	$451.8K	97%	0%	—	501(c)(3)
Ohio Interscholastic Athletic Administrators Association To advocate for our members by promoting the educational values of interscholastic athletics. 31-0897938 · FY2024	Bellefontaine, OH	$382.3K	$428.6K	$113.9K	77%	0%	—	501(c)(3)
Maryland Interscholastic Athletic Association INC Organize,oversee and promote ATHLETIC activities 52-2052714 · FY2024	Severna Park, MD	$305.4K	$283.4K	$171.1K	40%	0%	2	501(c)(3)
Washington Association for Pupil Transportation To assist pupils with safe and efficient TRANSPORTATION services. 91-1256745 · FY2025	Yakima, WA	$213.7K	$160.4K	$226.1K	18%	82%	—	501(c)(3)
Southwestern Maine Activities Association The organization is responsible for organizing athletic ACTIVITIES for students in coordination with school… 01-0461012 · FY2024	Scarborough, ME	$200.9K	$176.9K	$140.2K	100%	0%	—	501(c)(3)
Washington Interscholastic Activities Association Support of Interschool Activities in S.W. Washington. Distributions were made for education & activity… 91-1220835 · FY2024	Montesano, WA	$195.8K	$184.7K	$251.4K	99%	0%	—	501(c)(3)
Arizona Interscholastic Athletic Administrators Association To promote the educational aspects of interscholastic athletics within the total educational program. To… 94-2906654 · FY2024	Gilbert, AZ	$189.1K	$193.8K	$55.3K	98%	0%	—	501(c)(3)
Washington Association for the Education of Young Children 91-1045270 · FY2024	Tacoma, WA	$163.9K	—	$29.4K	—	—	—	501(c)(3)
Eastern Washington Interscholastic Activities Association-District 6 To plan, supervise and administer the INTERSCHOLASTIC ACTIVITIES approved and delegated by the school… 92-1305105 · FY2024	Marysville, WA	$146.0K	$125.2K	$31.0K	50%	0%	—	501(c)(3)
Washington High School Alumni Association of Massillon To preserve the heritage of WASHINGTON HIGH SCHOOL of MASSILLON, oh, and to provide services to class… 34-1614302 · FY2024	Massillon, OH	$120.7K	$64.5K	$950.1K	88%	0%	—	501(c)(3)
Utah Interscholastic Athletic Administrators Association 90-0334913 · FY2024	Midvale, UT	$110.6K	—	$21.2K	—	—	—	501(c)(3)
Washington Association for Korean Schools 51-0645383 · FY2024	Germantown, MD	$87.8K	—	$40.5K	—	—	—	501(c)(3)
Washington Science Teachers Association 23-7115030 · FY2024	Vancouver, WA	$79.6K	—	$216.9K	—	—	—	501(c)(3)
Washington School Home and School Association INC 36-4547759 · FY2024	Nutley, NJ	$75.7K	—	$67.0K	—	—	—	501(c)(3)
Washington Association of Professional Guardians 26-1510462 · FY2024	Gig Harbor, WA	$66.4K	—	$76.5K	—	—	—	501(c)(3)
Washington School Parent School Organization 45-3038527 · FY2023	Township of Washington, NJ	$59.7K	—	$4.4K	—	—	—	501(c)(3)
Washington School Administrators Foundation 82-3291509 · FY2024	Tumwater, WA	$58.0K	—	$0	—	—	—	501(c)(3)

2,046,138

nonprofits

212,946

funders

12,515,252

grants

22,549,931

directors

214,365

service providers

549,896,012

financial lines

Public data from IRS Form 990 e-file & Business Master File. A 990 shows reported financial activity, not measured program outcomes. Assets are from the IRS BMF and may lag the latest filing; fundraising cost is fundraising expenses as a share of total expenses. · philanthropy.org