My young brother got his HS girlfriend pregnant, what can he do?

I know the girl very well. She was his friend when they were 9 year-olds. They started dating in HS though.

They're now in 11th grade and my brother confided in me with the news that he got her pregnant. She's having twins. My parents don't know it yet. What can he do? He's just 16 years old; a kid.

Updates
4 mo
He practically pleaded with me to not tell our parents at this moment, at least not until after the New Year. I've been keeping this secret for the meantime.
My young brother got his HS girlfriend pregnant, what can he do?
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