A developmental pediatrician is a great first step for a young child--good for you.
A school district evaluation can help round out the evaluation process by yielding additional data. You need to request the evaluation in writing to the director of Special Education in the district in which you reside. Make sure to do it in writing (certified mail) because that sets legal timeframes into motion. This is a very busy time of year for sped staff and you don't want to be pushed to the bottom of the list on a technicality.
If you have insurance or can otherwise afford it I'd advise also getting private audiology and speech/language evaluations done. The school district doesn't have the equipment for the audiology part and the private evaluations are often more thorough than what the school will do. You can ask the developmental pediatrician for a referral.
