From the Houston Chronicle:
http://www.chron.com/
Boy who killed dad gets 10-year sentence -- A jury decided today that a 12-year-old boy who shot his father to death two years ago as the man waited outside his ex-wife's home in Katy should remain in custody for 10 more years...
Channel 12 says that it will report later on reasons why the boy may actually serve less time.
Mitigating factors:
At ten the boy was on a high dose of prozac.
Other allegations: the mother had poisoned him against his father; the father had abused him and his brother.
I suppose without those considerations, he might have been sentenced to be executed.