AOS 91

What AOS 91 does

AOS 91, legally the Mount Desert Island Regional School System (MDIRSS) and also doing business as MDIRSS, is a public K-12 school district operating under the Maine Department of Education. It serves as a regional alternative organizational structure consolidating public education across eight member communities on and around Mount Desert Island in coastal Maine - Bar Harbor, Mount Desert, Tremont, Southwest Harbor, Trenton, Cranberry Isles, Frenchboro, and Swan's Island. The district operates nine schools: Mount Desert Island High School (grades 9-12) in Bar Harbor / Mount Desert, and eight PreK-8 schools distributed across the other member towns, including Conners Emerson, Cranberry Isles, Frenchboro, Mount Desert Elementary, Pemetic Elementary, Swan's Island, Tremont Consolidated, and Trenton Elementary.

The district's digital infrastructure is built entirely on commodity third-party platforms: PowerSchool for student information management, parent/staff portals, and online enrollment (with a dedicated online pre-registration portal for new and re-enrolling students); Schoology for the learning management system serving parents and students; and Google Workspace for Education for document storage, forms, rubrics, and video streaming through the MDIHSTrojanTV YouTube channel. No proprietary technology is developed in-house, and the technology stack functions as integrated administrative and instructional plumbing rather than as a product surface.

AOS 91 is a government state entity funded through local property taxes, state education subsidies, and federal funding - there is no tuition, customer pricing, or commercial revenue model. The district operates under the Maine Department of Education and is governed by local school boards. In 2022 the district initiated a multi-year reorganization planning process to convert from an Alternative Organizational Structure (AOS) to a Regional School Unit (RSU), with a binding community vote scheduled for November 2026; the stated objective is equalizing educational opportunities and resources across member towns. Frenchboro School is closed for the 2025-2026 school year, with students redistributed across remaining facilities.

Name

AOS 91

Legal name

Mount Desert Island Regional School System

Website

https://mdirss.org

Company type

Private

Founded year

2022

Operating status

Operating

Short description

AOS 91 is a public K-12 regional school district operating nine schools across eight coastal Maine communities on and around Mount Desert Island, funded by local property taxes and state education subsidies.

Ownership category

akta.pro rank

Product category

Public K-12 Education

NAICS

Elementary and Secondary Schools (611110), Elementary and Secondary Schools (61111), Elementary and Secondary Schools (6111)

SIC

Services-Educational Services (8200)

akta.pro primary industry

Public High Schools (EDAJAAAD)

akta.pro secondary industries

Public Elementary Schools (EDAJAAAB), Public Middle Schools (EDAJAAAC)

Keywords

• Public K-12 education
• Regional school district
• Elementary education services
• Secondary education services
• Student information systems

Headquarters

HQ city

Bar Harbor / Mount Desert

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Supply Chain, Others

Distribution channels1 record

Marketing channels3 records

Core offering

Mount Desert Island Regional School System (AOS 91) operates as a public K-12 school district providing comprehensive public education services from PreK through grade 12 across nine schools serving the Mount Desert Island communities of Bar Harbor, Mount Desert, Tremont, Southwest Harbor, Trenton, Cranberry Isles, Frenchboro, and Swan's Island in Maine. Services include elementary and secondary academic programs, student transportation, online registration via PowerSchool, a Schoology-based learning management system, and student support programs such as the Anti-Racism Task Force and Title IX coordination.

Product overview

AOS 91 (Mount Desert Island Regional School System) is a regional school district providing public education services across Maine's Mount Desert Island and surrounding communities. The district operates a platform of nine schools serving approximately PreK-12 grade levels, including Mount Desert Island High School (9-12) and eight K-8 schools across multiple island towns. Core educational offerings include comprehensive academic programs, the Schoology learning management system for digital learning, PowerSchool-based student enrollment and information management, transportation services, and specialized initiatives including an Anti-Racism Task Force and Vision of Our Graduates program. The district is currently undergoing reorganization planning to transition from an AOS (Article of Agreement School) structure to a Regional School Unit (RSU).

Differentiator

Problem solved

Functional benefit

Products and services

• Mount Desert Island Regional School System (MDIRSS) K-8 Education Comprehensive K-8 (and PreK-8 where noted) educational programs delivered across eight island and coastal schools: Conners Emerson School, Cranberry Isles Schools, Frenchboro School, Mount Desert Elementary, Pemetic Elementary School, Swan's Island School, Tremont Consolidated School, and Trenton Elementary School. Intended for families with school-age children residing in the district's constituent towns.
• Mount Desert Island High School (MDIHS)

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Partnerships

Three partnerships are on record, tiered core.

• PowerSchoolcoreTechnology or IntegrationStudent information system and online enrollment/registration portal used across the district for managing student records and parent/staff portals
• SchoologycoreTechnology or IntegrationLearning management system (LMS) used by the district for course management and parent-student access to academic materials
• Maine Department of EducationcoreOthersState education authority overseeing the district reorganization process from AOS to RSU (Regional School Unit) status

Recent moves7 records

Expansion highlights4 records

Broad incumbents

• Lewiston Public Schools: Maine K-12 public school district serving Lewiston/Auburn. Comparable as a Maine K-12 district operating multiple schools under one governance structure, though with a much larger and more urban population base.
• Portland Public Schools (Maine): Maine's largest urban public school district operating K-12 schools in Portland. Comparable as another Maine K-12 public district but with substantially greater scale, urban setting, and broader program offerings.
• Augusta School Department: Maine municipal K-12 district based in the state capital. Comparable as another Maine K-12 public school operator, though at larger scale and in an urban setting.
• Bangor School Department: Maine municipal school district operating K-12 public schools in Bangor. Comparable as another Maine K-12 district but with a larger city footprint and more extensive secondary programs.

Direct peers

• RSU 24 (Maine): Regional School Unit serving several small Maine communities in the Sullivan/Bar Harbor-adjacent region. Comparable as a small Maine regional district consolidating multiple towns under one K-12 system.
• Mount Blue Regional School District (RSU 26 / MSAD 9): A regional K-12 public school district in western Maine (Farmington area) operating under an RSU/MSAD structure similar to AOS 91. Directly comparable on structure, funding model, and rural multi-town service area.
• RSU 14 (Windham / Raymond, Maine): Maine Regional School Unit operating K-12 schools across two towns. Comparable as another consolidated Maine regional K-12 district formed via the same AOS/RSU reorganization process AOS 91 is currently undergoing.
• MSAD 6 / Bonny Eagle: Maine School Administrative District serving Standish, Buxton, Gorham-area towns with K-12 schools. Comparable as another small/medium Maine multi-town K-12 district with similar funding structure and governance.
• Nantucket Public Schools: Public K-12 school district serving the island community of Nantucket, MA. Comparable as a single-district K-12 system operating across an isolated island geography with similar logistics, demographic, and resource challenges.
• Martha's Vineyard Public Schools: Public K-12 district serving Martha's Vineyard island communities. Comparable as a multi-school island public district with similar dependence on a seasonal/tourism-influenced tax base.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks4 records

Key highlights5 records

Customer concentration

• YouTubeyoutube.com/@MDIHSTrojanTV

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about AOS 91