It occurs to me that it might also be useful for selling gardening products, seeds and/or fertilisers.
It might also be desirable to one of those companies that provide extra coaching to get kids through exams, or companies providing training to businesses.
As you say, it is a nice and brandable domain. The only hassle is that you can't pick a single direction for it, and build it out a bit, or you might mess things up for the customer.