I took N4 this year.. I originally wanted to take N3 or N2 but I knew I'd have loads of stuff to work on for school, so virtually no time to study for the JLPT, plus my level last year was much higher because I used to spend 2 hours daily studying the language, something which I can't afford to do now, so I thought I might be overestimating my current level... either way, the exam was OK.. I think I'll probably pass, but whatever the results I intend to take N2 next year.. just need to start my preparation earlier..