Acadia Academy serves children in Pre-K through grade 4 on its campus in Lewiston. Acadia students are challenged to meet high expectations for academic, social, and emotional competence. The faculty and staff strive to support all students in developing their full potential in an environment that values belonging, connectedness, and contribution to the larger community.  Acadia currently serves 172 students from the area near Lewiston and Auburn.

Baxter Academy for Technology & Science is a rigorous, college-preparatory high school promoting student ownership of learning through a curriculum focused specifically on science, technology, engineering and math (STEM). The school's environment allows students to work on complex, real-world problems – often collaborating with scientists, engineers and other professionals. Baxter Academy enrolls 400 students from 60 Maine towns.

Community Regional Charter School was formerly known as Cornville Regional Charter School, the first elementary charter school in Maine.  The school has recently changed its name, keeping its "CRCS" nickname.  In 2018, CRCS expanded by adding an early childhood program and a high school programs in Skowhegan and the school has recently renamed each of its three locations:  Creative Children's Academy (PreK-K), Dimensions Academy (K-8), and Overman Academy (Grades 7-11).  Since its founding, CRCS has pioneered learner-centered, personalized learning practices - providing students “what they need, when they need it.”  The school now serves approximately 300 learners from over 29 surrounding, rural communities on its three campuses.

Ecology Learning Center Charter School, Maine’s newest, 10th charter school will open in Unity in the fall of 2020.  The school will serve 24 high school students initially and expand to 96.

Fiddlehead School of Arts & Sciences uses a Reggio Emilia-inspired approach to learning. These principles create a participatory learning experience with teachers and children as partners.  Learning is focused on the Image of the Child, the relationships and interactions within a system, of space, and the role of families. The school is located in Gray and serves 135 students from PreK to grade 5.

Harpswell Coastal Academy employs project-based learning – where students work for an extended period to investigate and respond to an authentic, complex question or challenge.  With a teacher-to-student ratio of 1:8, Harpswell can support in depth learning.  Whether developing an aquaculture system, writing, or filming an original documentary – HCA’s academic coursework challenges students to go beyond the traditional acquisition of facts and skills, to apply them to real-life situations.  Harpswell serves 200 students from 20 towns.

Maine Academy of Natural Sciences was the first public charter high school in Maine.  MeANS introduces students to careers in farming, forestry, sustainability, alternative energy and other related fields.  Students gain knowledge and skills through hands-on projects, internships, targeted courses, and real-world experiences such as growing food on campus for the cafeteria and residences.  MeANS now serves 178 students in grades 9-12.

Maine Connections Academy is a tuition-free public virtual charter school. MCA gives students the flexibility to learn at home with a uniquely individualized curriculum that meets rigorous Maine state education standards. MCA tailors its virtual learning approach for online students of all abilities—preparing students to succeed in school and in life. MCA currently serves 406 students from across Maine, in grades 7 to 12.

Maine Virtual Academy  is a virtual charter school serving students in grades 7-12.  The school provides a personalized program of courses, employing Individualized Learning Plans that target each student’s strengths and weakness.  Maine-certified teaches guide students through a rigorous and highly interactive curriculum that enriches and inspires, with activities that include field trips, open house gatherings, social events and clubs.  MeVA currently serves 390 students from all over the state of Maine.

Maine Arts Academy was founded as Snow Pond Arts Academy and recently changed its name.  Maine Arts Academy provides a comprehensive, college preparatory curriculum with a strong commitment to the performing and visual arts, leadership, integrity, and a virtuous code of conduct.  Students of the Arts Academy have a unique opportunity to find or pursue their passion in dance, musical theater, instruments, and the visual arts.  MeAA is a nurturing, inclusive, and culturally rich environment and currently serves 150 students from 50 towns in Maine. The school is located in a rural setting on Messalonskee Lake and shares a campus with the New England School of Music.