These types of online tests need to be approached with a grain of salt, but I feel 25k is accurate result to be honest. It's not real feat as I've lived in the USA since 1995, and that makes it over 15 years as I post this message. Still, considering that I never really had anything above "C" letter grade in any English classes, it shows that there are ways out of school to improve vocabularies. Just a heads-up for fellow foreigners who are studying hard. Everyone gets there in time.
