Great Explorers Co-Op

04/14/2026

Come visit us and see what we are all about!

03/12/2026

Come join us and show off your art! (Registration is required) Homeschoolers of all ages are welcome to come share what they have made and see what our group has been up to. Any media is welcome, Legos, paint, paper crafts, sewing, drawings etc. Email for more information [email protected].

02/27/2025

Now accepting school age families to look into our co-op for next year! Further information found on our FB page.

02/27/2025

Homeschool Co-op Opportunity!

Great Explorers Co-op (GECO) is holding a Shadow Day for interested homeschoolers to observe our co-op.

GECO is a secular homeschool co-op that meets on Mondays from 9-12:30 in Marlborough, MA. We offer member run classes to students from ages 5 to 18.

Besides education, GECO also focuses on community. We have weekly park meet ups, as well as field trips, event fairs, dances, camping trips, and more.

We have space available for our 2025-26 year. Prospective members are welcome to join our shadow day and attend classes on March 24, 2025.

Every family must have at least one child who is old enough to qualify for public school, but younger siblings are always welcome.

Please reach out on FB Messenger if you are interested in registering.

02/10/2025

A quick update of our 2024-2025 session. We have been busy with field day, classes, field trips and snow days. Lots of smiles all around!

01/22/2025

Ohhh astronomy explaining astrology

10/28/2024

Have you been interested in joining a homeschooling co-op in the Marlborough area?

You're in luck! We *are* a homeschooling co-op in Marlborough! And, we are hosting a Shadow Day on November 18, 2024 for interested families to see if GECO might be a good fit for them.

Great Explorers Co-op (GECO) is a secular co-op that meets at First Church in Marlborough on Mondays. We run for three 8-week sessions each year. The students can choose two classes to take each session. After morning classes, we continue to enjoy each other's company in the afternoon either at a local playground or by staying at the church (in the winter and inclement weather).

In addition to our Monday meetups, we also offer field trips and other social outings throughout the year.

GECO is not a drop-off co-op. Adults from each family stay for the duration of co-op and help to teach classes and fulfill the various administrative needs.

If you would be interested in coming for a Shadow Day, when you and your student(s) can come to co-op for the day and see if it's a good fit for you, please send GECO a message. We will work with you to find classes that your student would be interested in shadowing, and we'll go over any other questions you might have.

10/22/2024

We have a few openings for our field trip THIS FRIDAY!

WHERE: MIT Edgerton Center (Cambridge)
WHEN: Friday 10/25 9:30am - 12:30pm
TOPIC: Mechanical Engineering / Lego Car Rally
AGE: 8+ (most kids attending are 8 - 12)
COST: Free
(plan to pay for metro or parking)

Please let us know if interested!

Send a message to learn more

09/24/2024

07/06/2024

May was busy! CO-OP finished with our first graduate! MaggieRay is an original member and went along with all our plans so sweetly. Each age grouping was recognized and the older kids moved up to their new grouping in a ceremony. It was a big year of changes and learning and experiences. Thank you everyone who is a part of our group and those who help us out.