Complex sentence: Psychometrists deal exclusively with quantitative test administration, do not require graduate or postgraduate coursework beyond the undergraduate level, or licensure by state departments of education, and their services are used primarily in mental health community agencies.
Split into simpler sentences: Psychometrists deal exclusively with quantitative test administration, do not require graduate or postgraduate coursework beyond the undergraduate level, or licensure by state departments of education. Psychometrists' services are used primarily in mental health community agencies.