The Alliance compiles information on the activities of the Accreditation Program, including an analysis of accreditation decisions and a breakdown of accredited museums by museum type, budget, governance type, staff size and region.

Demographic Information

The statistics below are based on self-reporting accredited museums. For the full list of Accredited museums click here.

Museum Type

Primary Museum Type 
% of Accredited Museums
Art Museum/Center
History Museum
General (Multi-disciplinary)
Historic House/Site
Natural History/Anthropology Museum
Specialized Museum (e.g., railroad, music, aviation)  4%
Science /Technology Museum/Center (includes Planetariums)  3%
Arboretum/ Botanical Garden  3%
Children's/Youth Museum
Less than 1%
Zoological Park  Less than 1%
Nature Center Less than 1%
Less than 1%


Annual Budget  % of Accredited Museums
$350,000 and under   8%
$350,000–$499,999   6%
$500,000–$999,999  18% 
$1,000,000–$2.9M  30% 
$3M–$4.9M  12% 
$5M–$14.9M  17% 
$15M and over  10%

Governance Type

Governance Type
% of Accredited Museums
Private Non-Profit 63% 
College/University 16% 
State 7% 
Municipal 6% 
Federal 4% 
County/Regional 2% 
Other (e.g., joint governance, trust, school district) 2% 
Less than 1%

Staff Size

Number of Full-Time Staff
 % of Accredited Museums
1–5  15% 
6–15  28% 
16–30  21%
51–70  5% 
71–100  8% 
101–150  5% 
151–200  1% 
More than 200


Geographical Region (by Museum Association)
% of Accredited Museums
Southeastern (SEMC)  24%
Midwest (AMM) 18%
Mid-Atlantic (MAAM)  18% 
Western (WMA)  15% 
Mountain-Plains (MPMA)  14%
New England (NEMA)  11%

Accreditation Commission Decisions

Decisions Summary (2017)

Institutions Reviewed
29 29 39 97
Accreditation Awarded 13 13 23 49
10 5 10 25
Denied 2
Other 4 10 6 20

Institutions Reviewed: Includes all institutions on a given Commission meeting agenda. The number includes museums being reviewed by the Commission for the first time after a site visit and those submitting progress or final reports related to an earlier tabling decision. 

Accreditation Awarded: Institutions can be granted accreditation for the full 10 years or the museum can be flagged for an early review at 5 years.

Tabled: The Accreditation Commission “tables” its decision on a museum’s accreditation status when it identifies one or more specific concerns that are barriers to the institution’s ability to meet the Characteristics of Excellence, Accreditation standards, program requirements and/or eligibility, but which it anticipates can be addressed within one year or less.

Denied: Institutions are denied for failure to meet multiple Characteristics of Excellence and for major systemic problems. A denial decision can also be made when a tabled museum is unable to demonstrate adequate progress in addressing the Commission's concerns.

Deferral: The Commission may defer making one of the above decisions when it needs more information, clarification or expertise.

: Institutions that did not receive a final decision during the meeting (i.e., were not awarded accreditation, tabled, or denied). These include museums only presenting progress reports as part of a tabling action.

About Success Rates
The Accreditation Program has an overall success rate of 97%. About 2% are denied outright and 1% are unsuccessful after being tabled. The success rate is high in part because there are many steps built into the review process for the museum to receive feedback and counsel from the Accreditation Program staff, Commission and site reviewers; the museum then has an opportunity to respond or take some type of action. Museums also receive counseling and support from the program staff before and during the process to ensure readiness. Most museums come into the process well prepared.

All accredited museums must go through reaccreditation every ten years. (The Accreditation Commission, however, may designate a shorter cycle on a case-by-case basis.)