As you have asked about the list of institutes who provides Diploma in Special Education, check below for the information
Bala Vihar Training School, Chennai (Tamil Nadu)
Halls Road, Kilpauk Garden , Chennai (Chennai Dist.) - 600010

Minds College of Education, Mumbai (Maharashtra)
Abhyudya Nagar, opp building NO 12,Sewri Hills, Sewri Road , Mumbai (Mumbai Dist.) - 400033

Digdarshika Institute of Rehabilitation and Research, Bhopal (Madhya Pradesh)
Red Cross Bhawan, Shivaji Nagar , Bhopal (Bhopal Dist.) - 462016

National Institute for the Mentally Handicapped, Secunderabad (Telangana)
Manovikas Nagar, P.O. Bowenpally , Secunderabad (Ranga Reddy Dist.) - 500011

Alakendu Bodh Niketan Residential, Kolkata (West Bengal)
F-1/4-1, C.I.T. Scheme, VIIM, VIP Road, Kankurgachi , Kolkata (Kolkata Dist.) - 700054

Amar Jyoti Research and Rehabilitation Centre, New Delhi (Delhi)
Karkardooma, Vikas Marg , New Delhi (Delhi) - 110092

Bala Vikas Teachers Training Centre, Thiruvananthapuram (Kerala)
Bala Vikas Society, Bala Vikas Building, Peroorkada P.O. , Thiruvananthapuram (Thiruvananthapuram Dist.) - 695005

BN Institute of Mental Health, Ahmedabad (Gujarat)
Ashram Road, New Nehru Bridge, Navrangpura , Ahmedabad (Ahmedabad Dist.) - 380015

Central Institute of Mental Retardation, Thiruvananthapuram (Kerala)
Jagathy , Thiruvananthapuram (Thiruvananthapuram Dist.) - 695014

Chetna Institute for the Mentally Handicapped, Bhubaneshwar (Orissa)
Teachers Training Centre, A/3, Nayapalli , Bhubaneshwar (Khurda Dist.) - 751012

Chetna Institute of Mentally Handicapped, Lucknow (Uttar Pradesh)
Sector C, Aliganj , Lucknow (Lucknow Dist.) - 226020

Deepshikha Institute for Child Development and Mental Health, Ranchi (Jharkhand)
Arya Samaj Mandir, Sharadchand Road , Ranchi (Ranchi Dist.) - 834001

Dilkush Teachers Training In Special Education, Mumbai (Maharashtra)
Church Road, Juhu , Mumbai (Mumbai Dist.) - 400049

Divya Shanti Special School, Kolar (Karnataka)
"Silas House", 1st Cross Road, K.F.F, Robertsonpet , Kolar (Kolar Dist.) - 563122

Dr. TMA Pai College of Special Education, Udupi (Karnataka)
Kunjibettu , Udupi (Udupi Dist.) – 576102