No, my brother,
your information is false. Cetainly it was considered a mitzvah to educate ones children, if it were at all possible to do so, in late Antiquity, just as it is today. However, educated Jews in late Antiquity received a
Roman education. They learned
Greek. I'm not saying that
nobody knew Hebrew back then, but it certainly was not many. And it certainly was not carpenters, fishermen, tax-collectors, or any other of the poor folk of the Gallilee.
Also, it is easy to tell a text that has been translated into another language. It just doesn't
read the same as a text that you read in its original language.
There is zero textual evidence that the New Testament scriptures were written in any other language than Greek.
And none of this has anything at all to do with Aramaic, which appears in the New Testament only in two verses of the Gospel according to Matthew.
.....though, on second though, I'll give you this. In those two verses, Jesus is quoting the book of Psalms. If he
only knew the Psalms in the Greek LXX version, then why's he quoting them in Aramaic?
okay, hmmmmm, now you're making me think about this a little more.
But still, even if Jesus was literate in Hebrew, we have none of his writings. And even if the Apostles were literate in Hebrew, there is
no textual evidence that the New Testament books were written in another language than Greek.
Since you're not one of those folks who spurns Wikipedia (which I think is a remarkably well-written and -researched source, at least for the subjects in which I am expert enough to judge) I will give you, for your link, another link, which I commend to you to read.
http://en.wikipedia.org/wiki/Lxx
Grace & Peace to you