How Old Is Old Enough To Stay Home Alone?

United States
@gtargirl (5384)
February 14, 2008 1:40pm CST
I am a single mom and my fifteen-year-old thinks he should be able to stay home alone. This weekend I've been invited to a women's retreat at the Murietta Hot Springs and my daughter will also not be home. So is fifteen old enough to stay home alone? Am I too protective?