The typical 20-year-old university student in Canada will have a vocabulary of about 20,000 words. The typical 5-year-old will have a vocabulary of about 5,000 words.
The first 2000 words are the most important as they are the most frequent. They will account for approximately 82% of the words in academic texts.
If you want to engage in academic study in English, it has been estimated that you will need mastery of the first 7-8000 words. Mastery of the first 5000 is a minimum. Otherwise in reading and listening there will be far too many words that you don’t know, which will seriously impede your comprehension.
The tests you have taken have indicated your vocabulary mastery of the different levels of vocabulary. Mastery can be considered above 80% in the vocabulary levels tests. This would mean a score above 31 on level 1 and above 14 in the other levels. How is your vocabulary?
The next step is to plan your vocabulary study? Are you effectively building your vocabulary?