What a wonderful accomplishment your son has achieved! He deserves every accolade for his hard work. I have htree of my four children with genious IQ's. But not one of them could achieve a 4/0 in math and science (though I have a couple of 3.6 to 3.8ers who put me to shame).
When your children do well, it is a tribute to both the child and the parent. You have very right to be proud. Congrats to your son, and to you.
Seeeeeya; Goodweed of the North