This is an endorsement on a teaching certificate and three years of teaching is required to be eligible for the LDT-C certification. LDT-Cs are members of Child Study Teams which are responsible for the assessment, placement, IEP (Individualized Educational Program) development, and program monitoring of students referred to or eligible for special education services. An essential component of the LDT-C role is to provide consultation and in-service training for teachers regarding a student's educational program.