The two parts of IDEA

The two parts of IDEA that span the range of children in early childhood and special education are Parts B and C.  The role of families in the referral, assessment, qualification of services, and planning and implementation of goals and objectives varies based on whether a student qualifies under Part Bor Part C. Discuss the differencesand/or similarities between the two parts of IDEA as it relates to family roles and responsibilities.  In addition, discuss how a teacher can promote family engagement in the various roles previously listed for Part B and Part C. Your responses should be based on best practice and you should identify/cite empirical research that supports your responses.