nihongotojapan.com/en/research/japanese-learning-data-2026
Publicly accessible aggregate dataset from 56,613 anonymous learner answers on Nihongo to Japan (August 2026), showing accuracy rates by JLPT level, grammar patterns, vocabulary, particles and other knowledge points,.
Resource lists and enginesJLPT and other testsSentence patternsParticlesJLPTJLPT N3JLPT N2JLPT N1QuizzesJLPT N4BlogTutors and teachersJLPT N5