A survey was developed and distributed to service coordination constituents across the nation to determine whether the DRAFT Knowledge and Skills for Service Coordinators (KSSC) were comprehensive and complete. Participants (N = 933) included service coordinators (SCs), supervisors/administrators, and other early intervention (EI)-related professionals. Overall, respondents agreed that the DRAFT KSSC were comprehensive and complete, reflective of what SCs should know and be able to do, and the statements were clear. Furthermore, no significant differences were found among SCs, supervisors/administrators, and other EI constituents regarding any of these outcomes. Qualitative data were used to inform edits to the KSSC. Findings were used to validate the DRAFT KSSC, which, in turn, will be used to guide systems planning and decision-making to ensure SCs are well-prepared with the knowledge and skills necessary to partner with families and professionals from diverse backgrounds in EI.