The CPI is intended to provide an information processing or learning style screening for ages 4 through adult. So yes, it could be a good instrument to screen for underlying processing characteristics of students who may be candidates for the GED. You can either use the free on-line CPI provided on the LDinfo web site or use the link below to find out more about the CPI, download the free trial software, or purchase the professional CPI package. E-mail me if you have additional questions.
Scott