That's correct, there are 6 levels, and 10 chapters per level. Within these 60 chapters there is a total of 1753 vocabulary and 1456 kanji questions.
Out of these totals, level 1 only gives you 171 vocabulary and 111 kanji questions (less than 10% of the total questions). The number of questions per chapter increases quite a lot for levels 4-6 (Vocabulary Chapter 43 has over 100 questions!).
The lessons are only the first part to this site. Obviously just doing each lesson once doesn't mean you permanently now know all these words in your head... you would just forget them all pretty quick if you only did this.
Practice is another very big part to this site, and also where you get most of your EXP (Lessons do not give very much EXP). Practice shuffles all the questions and throws them at you, focusing more on questions you haven't answered in a long time and questions you have got wrong the most times. This is what helps you remember the words, and this needs to take a longer time (going many days between seeing the same question, then having to remember the answer again is part of how to get words to become fixed more firmly into your memory.)
Readings and Notes contain loads more extra vocabulary and kanji questions. Also, level 7 is supposed to be getting added some when soon too. ^^
June 6, 2014 at 3:21pm