Most interesting ! I love the use of Pyodide. It reminds my of https://basthon.fr/about.html . What is the libraries situation ? I'd be most interested in pandas, seaborn and SciKit-Learn to contribute teaching materials. Also, I have had the time to look into the architecture, but the best use of the Open Source nature of such project would be, imho, to have both a repository of teaching materials and one or more courses assembling a selection from the teaching materials repository. So that people could easily fork the repository to reuse some of the teaching materials and create new teaching materials for their own classes and contribute their new teaching materials upstream to you. Also, I haven't checked into the i18n / l10n situation of your project, but it would be nice to have the infrastructure to easily provide translations (I would be happy to contribute in French). Kuddos and best regards !