School Readiness Specialist (SRS) will administer the screening questionnaire to the subject during the intervention period, at the subject's 9, 18, 24 and 30 month visits. They will then see their PCP for a well child visit in which the results of the test will be interpreted, developmental counseling and/or anticipatory guidance provided as per usual care. EI (Early intervention) referral will be completed, at the discretion of the providers, if the subject fails the developmental screen or the caregivers raise a specific concern about the child's development.

Primary Care Physician (PCP) will do the developmental screening at the subject's 9, 18, 24 and 30 month well child visits. Once the screening questionnaire is complete the PCP will then score the screening tool and interpret the test results. Developmental counseling and/or anticipatory guidance will be provided, as per usual care. EI (Early intervention) referral will be completed, at the discretion of the providers, if the subject fails the developmental screen or the caregivers raise a specific concern about the child's development.

Subjects randomized to routine surveillance will receive routine preventive care as well as developmental surveillance at all well child visits, including the 9, 18, 24 and 30 month visits. EI referral will be completed, at the discretion of the provider, if the PCP observes a developmental delay during surveillance or the caregivers raise a specific concern about the child's development.

In the SRS intervention arm subjects will complete developmental screening tools with a school readiness specialist at their 9, 18, 24 and 30 month well child visits and then complete their well child visit with their primary care clinician to discuss the results.