Anjin, I'm 26 in August. : )
Nyororin, thank you very much for your reply and your advice about seeking further education. It does answer some questions I had about exactly how many gaijin there were in Japan who could sit for, and pass the JLPT1 test. However, I must admit that I find it very difficult to believe that a person could pass the JLPT1 test without at the very least being able to fluently speak Japanese at a conversational level.
Thank you, once again, for your reply.