Great article...Gives food for thought!....I am a licensed childcare provider,and I can tell you ;all of the childproofing tactics noted are criteria for licensing....The immunization schedule for Washoe County is strictly adhered to for facility admittance(no fun but so important!) and a M.D.`s autograph is legally necessary for any med.`s,even an OTC medication,to be given to your child. To speak to the issue of parental visit`s ,little ones delight in their mommy or daddy `s presence in what they think of as "their" special place,however the children may never be left alone with an unlicensed person,nor should they be.I appreciate the opportunity to observe parent -child interaction...the more information I have ,the better I can serve the child...I would add to Mr.Costello`s article that if, when leaving your little one with anyone,if you are uncomfortable or have that subtle"whisper of doubt",find somewhere else to place your precious one. Trust your intuition!!

 Every thing that has already been mentioned is great advise but there is one more thing I'd like to add. Make sure you are always welcome to stop by any time unanounced. Being that I was once a preschool teacher I understand them asking that you not makeing  your self known to your child right away once you get there if they are in the middle of an activity or group time, but just the fact that you can come and see what is going on when your not around. My favorite thing to look for is an observation room with a two way mirror. That way not even the teachers are aware of your presence. But a window would work.
  Bella's Mommy