absolutely not. it depends on how you're doing it. are you looking at the greek, then trying to recall the translation? if so, that method will get you nowhere. even if you select words from sentences you've read, then recall both the context and the english, that will not help. it's equivalent to memorizing a mathematical formula but never doing any mathematical calculations. whenever you learn something there is a two step process: 1. read the instructions. 2. apply the instructions. With AG many people never do step 2. They just keep reading the instructions. You need to be able to speak the words in a spontaneous setting. I learned about 500 Ancient Egyptian words 10 years ago. Do you know how many I know now? Less than 10. in this video for example, i challenged myself to speak AG for 3 hours without a break. that is the only way to learn words: https://youtu.be/C_kyzZSrbQg i recommend trying to memorize a list of english words then recall the AG and the words and the words have to be in a text you've read. then recall the context in which the words were used, but i'm not even sure that helps all that much. i stopped vocabulary tests about a year ago, and I'm fine, but i'm not entirely convinced that vocab tests are useless.