intp/esfj

Is there any reason why an INTP would test as an ESFJ? I have a friend who I'm convinced is an INTP (others are convinced as well) but she's taken the test twice and ends up with ESFJ. Which doesn't make sense at all. btw- she's a middle school teacher, maybe that has something to do with it...

My husband is an ESFJ. we are worlds apart in nearly everything. different ideals, interests, temperments- everything. and yes, i knew we were different when we married. we've been married almost two years now and are differences are apparent more and more each day. He loves being around people...