search facility for Japanese junior high school textbooks
If you're not sure whether students have studied a particular word yet, search for it here to find out where the word first appears. You can also narrow the search by part of speech.
Only the Sunshine books are covered right now, but the rest are to follow soon! Go to the Uploadinator page to help out. I don't have the time or the resources to do it all myself. To all those who are asking "Why only the Sunshine books?!" the answer is... help compile the word lists! ;-)