A sequential-developmental approach to the assessment of individuals from the earliest sensorimotor period through the level of abstract reasoning is discussed. The assessment is hierarchically sequenced and is concerned with how and why individuals process information. The assessment procedures provide practical data on levels of development. (JN)

Since each disabled student must be considered individually, planning and implementing a realistic individualized education program while meeting the mandates of the law will always be difficult. The primary objective of educational diagnosis should be to determine the child's present level of functioning. (JN)