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IDEA section 618(d) requires states to collect and examine data to determine if significant disproportionality based on race and ethnicity is occurring in the state and the local educational agencies (LEAs) of the state with respect to: 
                  - The identification of children as children with disabilities, including the identification of children as children with disabilities in accordance with a particular impairment;
                  - The placement in particular educational settings of such children; and 
                  - The incidence, duration, and type of disciplinary actions, including suspensions and expulsions. 

IDEA and its implementing regulations do not, however, define “significant disproportionality.” The Part B regulations require states to use a standard methodology for analysis of disproportionality, which includes states setting a threshold above which disproportionality in the identification, placement, or discipline of children with disabilities within an LEA is significant. The standard methodology uses risk ratios to analyze disparities for seven racial or ethnic groups, comparing each to all other children within the LEA in 14 different categories of analysis. States determine the thresholds above which the risk ratio in each category of analysis indicates significant disproportionality. States have flexibility to identify an LEA with significant disproportionality only after it exceeds a risk ratio threshold for up to three prior consecutive years, exclude small populations from analysis, and exclude from determinations of significant disproportionality LEAs that have made reasonable progress in reducing their risk ratios. (See 34 C.F.R. §§300.646 and 300.647.)

The Part B regulations also require states to report all risk ratio thresholds, minimum cell sizes, minimum n-sizes, and standards for measuring reasonable progress, and the rationales for each, to the Department. In 2020, OSEP required states to submit this information through the Significant Disproportionality Reporting Forms under Section V.B. of their FFY 2020 IDEA Part B grant applications. The form provides a summary of information on procedures that comply with the Significant Disproportionality requirements under 34 CFR § 300.647(b)(7).

In an effort to provide increased transparency regarding the implementation of the requirements around significant disproportionality within states, that allows LEAs, and stakeholders to monitor significant disproportionality and to emphasize the importance of soliciting public input in the review and revision of risk ratio thresholds, cell sizes, and n-sizes, OSEP is posting states’ submitted Significant Disproportionality Reporting Forms. States had an opportunity to update their Significant Disproportionality Forms, if necessary, before the documents were posted to OSEP’s website by submitting revised forms with their FFY 2022 Part B grant application. States also will continue to provide updated forms to the Department, through their Part B grant applications, when any changes are made to their methodologies. Updated forms will be posted on this page.

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                  - Significant Disproportionality: Essential Questions  ( March, 2017)

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Alabama | Alaska | American Samoa | Arizona | Arkansas | Bureau of Indian Education | California | Colorado | Connecticut | Delaware | District of Columbia | Federated States of Micronesia | Florida | Georgia | Guam | Hawaii | Idaho | Illinois | Indiana | Iowa | Kansas | Kentucky | Louisiana | Maine | Marshall Islands | Maryland | Massachusetts | Michigan | Minnesota | Mississippi | Missouri | Montana | Nebraska | Nevada | New Hampshire | New Jersey | New Mexico | New York | North Carolina | North Dakota | Northern Mariana Islands | Ohio | Oklahoma | Oregon | Pennsylvania | Puerto Rico | Republic of Palau | Rhode Island | South Carolina | South Dakota | Tennessee | Texas | Utah | Vermont | Virgin Islands | Virginia | Washington | West Virginia | Wisconsin | Wyoming

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## Alabama

                    -  Alabama Part B Significant Disproportionality Reporting Form for 2022PDF

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## Alaska

                    - Alaska Part B Significant Disproportionality Reporting Form for 2020PDF

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## American Samoa

                    - American Samoa Part B Significant Disproportionality Reporting Form for 2020PDF

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## Arizona

                    - Arizona Part B Significant Disproportionality Reporting Form for 2020PDF

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## Arkansas

                    - Arkansas Part B Significant Disproportionality Reporting Form for 2020PDF

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## Bureau of Indian Education

                    - Bureau of Indian Education Part B Significant Disproportionality Reporting Form for 2020PDF

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## California

                    - California Part B Significant Disproportionality Reporting Form for 2020PDF

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## Colorado

                    -  Colorado Part B Significant Disproportionality Reporting Form for 2020PDF

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## Connecticut

                    - Connecticut Part B Significant Disproportionality Reporting Form for 2020PDF

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## Delaware

                    -  Delaware Part B Significant Disproportionality Reporting Form for 2022PDF

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## District of Columbia

                    - District of Columbia Part B Significant Disproportionality Reporting Form for 2020PDF

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## Federated States of Micronesia

                    -  Federated States of Micronesia Part B Significant Disproportionality Reporting Form for 2020PDF

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## Florida

                    - Florida Part B Significant Disproportionality Reporting Form for 2020PDF

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## Georgia

                    - Georgia Part B Significant Disproportionality Reporting Form for 2020PDF

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## Guam

                    - Guam Part B Significant Disproportionality Reporting Form for 2020PDF

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## Hawaii

                    - Hawaii Part B Significant Disproportionality Reporting Form for 2020PDF

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## Idaho

                    - Idaho Part B Significant Disproportionality Reporting Form for 2020PDF

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## Illinois

                    - Illinois Part B Significant Disproportionality Reporting Form for 2020PDF

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## Indiana

                    - Indiana Part B Significant Disproportionality Reporting Form for 2020PDF

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## Iowa

                    - Iowa Part B Significant Disproportionality Reporting Form for 2020PDF

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## Kansas

                    - Kansas Part B Significant Disproportionality Reporting Form for 2020PDF

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## Kentucky

                    - Kentucky Part B Significant Disproportionality Reporting Form for 2020PDF

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## Louisiana

                    - Louisiana Part B Significant Disproportionality Reporting Form for 2020PDF

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## Maine

                    - Maine Part B Significant Disproportionality Reporting Form for 2020PDF

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## Marshall Islands

                    -  Marshall Islands Part B Significant Disproportionality Reporting Form for 2020PDF

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## Maryland

                    - Maryland Part B Significant Disproportionality Reporting Form for 2020PDF

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## Massachusetts

                    - Massachusetts Part B Significant Disproportionality Reporting Form for 2020PDF

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## Michigan

                    -  Minnesota Part B Significant Disproportionality Reporting Form for 2020PDF

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## Minnesota

                    - Minnesota Part B Significant Disproportionality Reporting Form for 2020PDF

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## Mississippi

                    - Mississippi Part B Significant Disproportionality Reporting Form for 2020PDF

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## Missouri

                    - Missouri Part B Significant Disproportionality Reporting Form for 2020PDF

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## Montana

                    - Montana Part B Significant Disproportionality Reporting Form for 2020PDF

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## Nebraska

                    - Nebraska Part B Significant Disproportionality Reporting Form for 2020PDF

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## Nevada

                    - Nevada Part B Significant Disproportionality Reporting Form for 2020PDF

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## New Hampshire

                    - New Hampshire Part B Significant Disproportionality Reporting Form for 2020PDF

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## New Jersey

                    - New Jersey Part B Significant Disproportionality Reporting Form for 2020PDF

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## New Mexico

                    - New Mexico Part B Significant Disproportionality Reporting Form for 2020PDF

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## New York

                    - New York Part B Significant Disproportionality Reporting Form for 2020PDF

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## North Carolina

                    - North Carolina Part B Significant Disproportionality Reporting Form for 2020PDF

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## North Dakota

                    - North Dakota Part B Significant Disproportionality Reporting Form for 2020PDF

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## Northern Mariana Islands

                    - Northern Mariana Islands Part B Significant Disproportionality Reporting Form for 2020PDF

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## Ohio

                    - Ohio Part B Significant Disproportionality Reporting Form for 2020PDF

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## Oklahoma

                    - Oklahoma Part B Significant Disproportionality Reporting Form for 2020PDF

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## Oregon

                    -  Oregon Part B Significant Disproportionality Reporting Form for 2022PDF

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## Pennsylvania

                    - Pennsylvania Part B Significant Disproportionality Reporting Form for 2020PDF

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## Puerto Rico

                    -  Puerto Ric Part B Significant Disproportionality Reporting Form for 2020PDF

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## Republic of Palau

                    - Republic of Palau Part B Significant Disproportionality Reporting Form for 2020PDF

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## Rhode Island

                    - Rhode Island Part B Significant Disproportionality Reporting Form for 2020PDF

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## South Carolina

                    - South Carolina Part B Significant Disproportionality Reporting Form for 2020PDF

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## South Dakota

                    - South Dakota Part B Significant Disproportionality Reporting Form for 2020PDF

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## Tennessee

                    -  Tennessee Part B Significant Disproportionality Reporting Form for 2022PDF

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## Texas

                    - Texas Part B Significant Disproportionality Reporting Form for 2020PDF

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## Utah

                    -  Utah Part B Significant Disproportionality Reporting Form for 2020PDF

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## Vermont

                    - Vermont Part B Significant Disproportionality Reporting Form for 2020PDF

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## Virgin Islands

                    - Virgin Islands Part B Significant Disproportionality Reporting Form for 2020PDF

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## Virginia

                    - Virginia Part B Significant Disproportionality Reporting Form for 2020PDF

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## Washington

                    - Washington Part B Significant Disproportionality Reporting Form for 2020PDF

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## West Virginia

                    - West Virginia Part B Significant Disproportionality Reporting Form for 2020PDF

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## Wisconsin

                    - Wisconsin Part B Significant Disproportionality Reporting Form for 2020PDF

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## Wyoming

                    - Wyoming Part B Significant Disproportionality Reporting Form for 2020PDF

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