(a) Structured, field-based training must be focused on actual experiences with each of the standards identified in §239.83 of this title (relating to Standards Required for the Educational Diagnostician Certificate) to include experiences with diverse types of students, grade levels, and campuses.(b) An educator preparation program may develop and implement specific criteria and procedures that allow a candidate to substitute related professional educational diagnostician training and/or experience directly related to the standards identified in §239.83 of this title for part of the preparation coursework or other program requirements.