Oh I found it. It's learn-anything.xyz. Source: about 1 year ago

I think I found something that looks and works like what you described: https://learn-anything.xyz/. If it's not that one then I'd also like to know what it is because it sounds really useful haha. Source: over 1 year ago

This one is my favourite, its not great for everything but most of the time it provides a solid road map to learning something new. https://learn-anything.xyz/. - Source: Hacker News / over 1 year ago

Learn Anything : Community curated knowledge graph of best paths for learning anything. - Source: dev.to / over 1 year ago

You may be thinking of https://learn-anything.xyz/. - Source: Hacker News / over 1 year ago

GitHub classroom is an excellent resource for educators. https://classroom.github.com/. Source: almost 2 years ago

I don't know of any other site that offers those features in "a classroom" for free although you could probably cobble something together with Github Classroom and/or the the CS50 IDE. Source: almost 3 years ago

At the same time their, very first typical, "Hello Universe" introduction repositories are handed out via private repositories powered via GitHub Classrooms. - Source: dev.to / about 3 years ago