I enrolled a candidate through onBoard for the next school year. When I look them up in Core, they are showing as a Student instead of an Incoming Student.
The role that a user receives when being enrolled is based on the current year setting. If the candidate's entering year matches what is set to current year in Core > School > Years & Terms, at the time of enrollment, then the user will receive the Student Role. If the entering year is after the current year, then the user will receive the Incoming Student Role.