I'm a parent and rather than "I started riding the bus when..." statements, I can share that my 16 year old has been Metro bussing to high school since her freshman year with no hiccups. If your kids are SPS high school students, they'll get ORCA cards rather than a yellow bus assignment to get to school so 14 is seen as an appropriate age by the district. I love that my daughter has figured out how to use Metro's Trip Planner, has general knowledge of what routes take her where and can get herself to orthodontic and other types of routine appointment without me leaving work mid-day. Statistically speaking, it's far more dangerous for the kids to be in my car with me behind the wheel than on the bus and will be exponentially more dangerous once my 16 year old has her permit and starts learning to the drive. Me tooling around the two lane roads of South King County in a '74 Ford Courier with no shoulder belt or air bags at 50 mph on a regular basis during the early '80s was a far, far more dangerous thing to do than take Metro.