They are writing it during this weekend, but press release for hackathon was month ago (http://pastebin.com/sKKnRL19) and if I recall correctly he was hinting something about this project month or two before that. So there has been time for planning.

And like Tuna-Fish said, Finnish high school courses are quite limited and self-contained.

The scope (Finnish Lukio class maa1) is very limited, making this quite feasible.

No, it should be something which is written over decades, like the Linux kernal.

But a good open-source core will be a nice starting point.

Hence, they wrote a MATH text. Duh.

Equally true for software but well