I'd like to see these final three assertion statements changed so that there's a little helper function called "check_score" or something that takes the two scores and the name of the classifier, and then have a for loop that yields check_score and the appropriate arguments. Basically, make it like the kappa tests. 

That way if only one of the learners is broken we'll be able to see that pretty easily. In the current version nose will stop executing statements after the first assertion fails.