[mahipal]

We've been piloting with teachers, so we're starting by marketing to teachers directly. The goal is to have a product that's both useful at the free level and affordable at the premium level, given teachers' budgets.

We've started talking to schools, too, but I think it will be some time before we really target the marketing there.

[timjahn]

I'd be interested to hear your success with teachers directly. My wife's a high school teacher, so I know that teachers pay out of pocket for almost everything.

Depends on how passionate the teacher is often.