Ikoma isn't very test focused, unless you sign up for the JLPT preparation courses (I never tried that though but I heard it's intensive). I like it that way because tests during classes take the fun out of learning Japanese. It might not suit everyone's tastes though. Classes are very casual, at least with the teachers I've had so far, we use casual speech once we have learnt it.
I always wonder though, why polite speech is taught first? With casual speech you can easily modify the verbs, but it's so much tougher converting from polite to other verbs. Maybe it's because it's a 'Japanese' thing to speak politely before you speak casually? Or maybe it's catered to JLPT4

I wonder how Bunka teaches its elementary classes?