Just to note, our eventual goal is to have toddlers through what I think we call C-2 internally (sophomore year of college in the American system). We do actual

Just to note, our eventual goal is to have toddlers through what I think we call C-2 internally (sophomore year of college in the American system). We do actually have content at all of those levels, and expanded really nicely to the younger crowd when we "bought" Duck Duck Moose, but we're definitely not covering all of those areas consistently across subjects. Some stuff (e.g. art history) is only at high school level, other stuff (e.g. English) covers the gamut but amazingly randomly in terms of actual content, etc. So, I don't think we'll have "advanced" math (for some values of "advanced") any time soon, but we're definitely aiming to get solidly into general college-level stuff, so things like stats/linear algebra/etc. should all be covered nicely eventually.