you guys (gals) are so nice and supportive! I really appreciate it and your advice.

My little sis was definitely smarter than I was (am), but we always got along like best friends. once she skipped 2 grades and was 1 grade behind me, but I always helped her, taught her what I was learning in class. Now, who knows what would have happened if she skipped another grade and was in my class? But that didn't happen. I wish I could foster the well-wishing I felt toward her in my two boys. I don't feel we encourage competition at all--achievement, yes, but I wonder whether there are team-building strategies to help them work together, rather than compete.

Anyway, I'll explore the possibilitiies further. Thanks to you all.