If you can only say "Hello" and "Goodbye", you have not yet reached English level A1, even if it is the very first of six. At this level, you can already communicate in simple sentences in everyday life and understand people who speak slowly and clearly. You should be able to read simple media such as postcards and write them yourself. As a rule, you will have reached English level A1 by the end of sixth grade if you started at the beginning of fifth grade.