I do consider myself a student in Ed Parkers Kenpo, which in short would be an Ed Parker student, but that's probably not what you mean, since I have never had the pleasure and the honor of meeting Mr. Parker.
You're probably searching for a definition of someone who could call himself Ed Parker's student. I guess in my opinion there was only person who could determine who Ed Parker's students were, and was Ed Parker himself.
Since the man unfortunately is no longer with us, he hasn't got any students anymore, so the answer to your question would be no-one.
To elaborate further on this I'd like to ask why does it matter? We're all students of Ed Parker's Kenpo. Some can tell stories about Ed Parker from their own experience, and some can't but does that in itself make their Kenpo better or worse? Not in my opinion.
If we believe that only a person who has been a direct student of Ed Parker can be good (the best) at Kenpo, then we will have to admit that the road we're following is going nowhere but downhill. In 50 years there will be no former Ed Parker's students left, so first generation students, who were the best in this dogma, will have to be replaced by 2nd generation, and another 50 years later there will only be 3rd generations left.
(the periods of time will most probably be shorter then that, but I don't want to send anyone in instant depression, which is why I talk about 50 years).
Do we want to follow a downhill road? I for sure don't, and I'm still around because I don't believe that's the road we're following.
Newer generation students who have never met Mr. Parker can be just as good or even better then the first generation. The only reason why at this moment in time the best people in Kenpo (IMO) are some of the people who have been students of Ed Parker, is that those are the people who have been in and at Kenpo for the longest time!! By the time we, second and third generation Parker Kenpoists, have been training and studying for more then 30 years, some of us will be just as good or even better then the seniors we look up to now.
Our road isn't going downhill, we're going upward and we're nowhere even near the top of the mountain yet!!
That's where the people who were Ed Parker's students come in handy, they know about history from their own memory. And that's why books like "The Journey" are so important, to be able to trace back history after the first generation will be gone. All the questions we still have after reading those books, will have to be asked now, while tey're still around.
Just my opinion, keep the discussion friendly, even if you don't agree.
Marcel de Jong, 4th Black from the Netherlands