AASP is an association of both school psychologists and psychometrists.  School psychometrists have a master's degree and state certification in School Psychometry.  School psychologists have an educational specialist or doctoral degree and both state and national certification.  

School psychologists help children and youth succeed academically, socially, and emotionally. They collaborate with educators, parents, and other professionals to create safe, healthy, and supportive learning environments for all students that strengthen connections between home and school.

School psychologists are highly trained in both psychology and education. They must complete a minimum of a Specialist-level degree program (60 graduate semester credits) that includes a 1200-hour internship and emphasizes preparation in the following: data-based decision making, consultation and collaboration, effective instruction, child development, student diversity and development, school organization, prevention, intervention, mental health, learning styles, behavior, research, and program evaluation.

School psychologists must be certified and/or licensed by the state in which they work. They also may be nationally certified by the National School Psychology Certification Board (NSPCB).