The JLPT is divided into five levels: N5, N4, N3, N2, and N1, with N5 being the easiest and N1 the most challenging.
N5: Basic understanding of Japanese, including everyday phrases and basic kanji.
N4: Basic ability to understand and communicate in familiar situations using simple sentences.
N3: Intermediate skills for understanding everyday situations, including written and spoken... http://studyjapaneselanguage.com/