GAKU Engine [学エンジン] is a full featured and super extendable Open Source School Management System.
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Gem Version Code Climate Gitter chat GAKU Engine [学エンジン]

GAKU Engine, or just "GAKU" for short is the "GenSou Academic Karte Unification Engine". The gaku character 「学」 means "Learning", so saying GAKU Engine is roughly equivilent to saying "Learning Engine".

GAKU is a modular, extendable, Open Source school and student management system built on Rails.

GAKU is currently under heavy development

We do not currently recommend anyone use it in a production environment.


This software is dual licensed under the GNU GPL version 3 and the AGPL version 3.
Separate licenses are available upon consultation. Please contact for details.

What does it do?

GAKU Engine is a full school and student management solution including student, staff, syllabus, course, class, exam management and more. It has a full grading system and offers templatable printable reports. Functionality can be enhanced with extensions and can be integrated with external services and clients using the API.

GAKU Engine is also:

  • Completely Open Source, Free as in Freedom, licensed under the GPL v3 and AGPL 3.
  • It only uses Free Open Source components and does not rely on commercial components.
  • There are no per-seat licenses.
  • It's Rails based, so it's easily modifyable and extendable.
  • It is multi-locale.


Full installation:

  • A newer version of Ruby and a user account that can install Gems
  • A newer version of postgresql and postgresql-contrib

Docker instance:

  • A newer version of Ruby and a user account that can install Gems
  • Docker and docker-compose

New Installation

Install the 'gaku' gem and command

gem install gaku

Create a GAKU installation

gaku install MySchoolName

Replace MySchoolName with your school name or the name you want for your GAKU installation.
Please avoid using spaces and special characters in your installation name.

Developer Information

There are several ways to work on GAKU Engine itself. We recommend creating an installation and pointing the Gemfile entires to a locally cloned repository. In this case we do not use Docker, so you'll need to run servers locally. First off, let's clone the repository. If you are intent on submitting a patch it may be a good idea to fork the repository in advance and clone your fork, but you can always fork later and push to your fork before you submit a pull/merge request.

To make things easy, we recommend cloning the repository in the same path that your installation is contained in, and the remainder of this guide will assume this layout:

git clone

If you don't have an existing installation or want to create a separate development installation then we recommend cloning the repository first, then running the gaku command from within the cloned repository.

cd gaku
gem install bundler
bundle install
bundle exec bin/gaku new ../GakuSample

Then, cd to the directory of the installation you'll use for testing (GakuSample if you followed the above setup step) and edit the Gemfile, changing the following entires as shown:

gem 'gaku', path: '../gaku'


Testing does not use a sample app like above, instead there is a self contained test app and specs are run directly against this.

Each component of GAKU Engine has its own set of tests. Core functionality is found in core, Front End functionality is forund in frontend, etc. Generally you'll want to run tests in core, so the example here is for core.

Change to core engine:

cd core

Initialize the test app

bundle exec rake test_app

Run specs:




Development has been resumed, but not full time. We are currently actively seeking funding, and current development efforts are targeted at providing an MVP [Minimum Viable Product] to seek full funding with buiness partners looking to utilize GAKU Engine to provide their own services. If you would be looking to provide GAKU Engine as your own service or to sponsor GAKU Engine development please contact us at

If you are an OSS developer looking to contribute to GAKU Engine please contact for tasks and guiance. You will be fully credited for your work, and we will absolutely do our best to compensate you for your work.

Pull requests are very welcome! Please try to follow these simple rules:

  • Please create a feature branch for every separate change you make.
  • Open a pull-request early for any new features to get feedback.
  • Make sure your patches are well tested. All specs must pass.
  • Run rubocop to ensure no style guide issues.

Core Team


Code of Coduct

We welcome anyone. We will not exclde people from this project based on their identity, preferences, political affiliation, opinions, or how they chose to express themselves on any media. If you write good code we're happy to have you as a contributor.