FWIW, 2 of my best friends have Klinefelter's Syndrome. Both were diagnosed as teens. N did have problems in school, but he thinks now most of that was growing up gay in Iowa and had nothings to do with his KS.
My other friend T is a stage actor and rather gorgeous man with 2 lovely little girls through the help of IUI and sperm from a bank. He was shy, but his parents were very very supportive and they helped him over come a lot of his challenges. In fact, he started acting to help him get out of his shell and with reading and memorisation. He still has to have his wife help him learn lines, but on the whole you would never know. In fact, he used to do improve with Second City in Chicago and was so amazing! (And I have to admit (here only) that I had the BIGGEST crush on him growing up.
You WILL do great mothering this little fella.

