Hello Sompong,
I DON'T think education has anything to do with participating in CiteHR.
Frankly, if you read some of the postings/threads, the english language presentation/grammar is....to say little....absolutely atrocious. Some even use the typical SMS language--one needs to read the posting >10 times to just understand what's being said.
But still, that doesn't mean such members shouldn't OR don't participate--after all unless a person begins to take part, how would he/she develop?
To borrow a Quote from THIS VERY POSTING: "Every Accomplishment starts with the decision to Try".
Hope you get the point :-)
Rgds,
TS