I find it strange that 'jealousy' is not in RMK I. After all, doesn't RMK I contain the kanji's that high school student learns. Is the kanji for 'jealousy' not one of them?

No, it isn't.

What's RMK?

According to one more recent frequency study of newspaper kanji, JEALOUS is in the top 2,500 kanji. And it is listed as a non-jouyou kanji. I know that elementary school students in Japan learn approx 1,000 kyoiku kanji, and i thought they finished off the jouyou kanji in junior high school. As compulsory education only goes through junior high school, right? (Or is it too late at night, and my brain too muddled to recall this correctly.)

If this is the case, what kanji do high school students in Japan study?

I don't know what I was thinking either. By RMK, I meant to write Remembering the Kanji. I don't know why I there is an M there.

That's good to know. I guess finishing the first edition won't be so delightful yet. There are lots of words that I want to know that aren't in the first edition but are in the 3rd edition.

You are confusing the difference between kanji and vocabulary. By that reasoning you would never learn the word for "spider" (くも) because it doesn't appear in any of the Heisig books, and you wouldn't learn the word for "this" (これ) until the beginning of Book III.

But my guess is that if you didn't know the words for "spider" and "this" already, you've learned them by this point in my post and if you want to know how to say "jealousy," here you go. Ready?
しっと