see the Battelle Development Inventory

I have not used it a lot, but some like it better than others. It seems user friendly and pretty basic.

We use the PDQ Denver Developmental Questionaire at the peds office where I work once in awhile. It can be a good tool, but sometimes parents are not very objective with the assessment and tend to under-report any problems they see. I like the Denver questionaires because the questions are simple and you can go over them with the Mom and/or Dad in just  a few minutes.

I do not have a lot of peds experience, so maybe somebody else can answer more intelligently for you.