Another horrible incident at a school. A 5-year-old girl was allegedly abducted by a stranger from her school classroom at a Philadelphia elementary school. Thankfully the child was found. But get this, officials didn't learn of her disappearance until six hours after she was missing. How do you not notice that one of your students isn't missing for 6 hours?

Nailla Robinson, 5, was found in a park under bleachers and transported to the Children's Hospital of Pennsylvania and checked for hypothermia.

Police say the little girl told them a stranger took her from the school Monday. She said she was blindfolded and walked a couple of blocks to a house. Nailla said a teenage girl later took her from that house to the playground, according to police.

Nailla was taken from Bryant Elementary School Monday at about 8:50 a.m. by a woman covered with a black piece of cloth over her face The woman taking the child was caught on surveillance video. The school did not know Nailla was missing until six hours later when the girl's daycare arrived to pick her up.

"I don't know if it's an accident or whatever it is, please bring my baby home. Don't hurt her. [She] told her teacher that she was me, her mother, and that she was taking her out to breakfast and Nailla was already signed out at the office and she took my child and left."

According to the Philadelphia police, there is a signature in the school's book that you are required to sign anytime you go into the school, but the signature is not legible. There is also a list of people from the each students parents on who can pick up their child. Obviously, that didn't work.

I'm outraged -- how could this child have been taken from her classroom without being noticed? What is going on in our kids' schools? How can we protect our children when they are at school? What are your thoughts?