As you want here I am giving below list of Indian Certificate of Secondary Education (ICSE) Schools which located in Chennai:

Primrose Schools
1/367, ECR Main Road, Injambakkam, Chennai, Tamil Nadu 600115

Ashram Matriculation School
20, Velachery Main Rd, Kannigapuram, Race View Colony, Guindy, Chennai, Tamil Nadu 600042

Grove School
Eldams Rd, Vannia Teynampet, Lubdhi Colony, Teynampet, Chennai, Tamil Nadu 600018

Sishya School
New No. 2, 2nd Street, Padmanabha Nagar, Chennai, Tamil Nadu 600020

Abacus Montessori School
3, Thirumalai Nagar, Annexe III Main Road, Perungudi, Chennai, Tamil Nadu 600096

St. Augustine School
Rajarathinam Main Rd, Ullagaram, Madipakkam, Chennai, Tamil Nadu 600091

M.CT.M. Chidambaram Chettyar International School
179, Luz Church Rd, CIT Colony, Mylapore, Chennai, Tamil Nadu 600004

Vaels International School
Pon Vidhyashram Gardens, Off East Coast Road, Injambakkam, Chennai, Tamil Nadu 600115

Chettinad Hari Shree Vidyalayam
20, Srinivasa Ave Rd, Ramakrishna Nagar, Raja Annamalai Puram, Chennai, Tamil Nadu 600028

KFI
Damodar Gardens, Besant Avenue, Adyar, Chennai, Tamil Nadu 600020

White Gold Montessori School
29, Perambur High Rd, Adhisesha Nagar, Jamalia, Chennai, Tamil Nadu 600012

Saint Patricks School
11, 1st Cres Park Rd, Gandhi Nagar, Chennai, Tamil Nadu 600020

Doveton Group Of Schools
1, Ritherdon Rd, Vepery, Purasaiwakkam, Chennai, Tamil Nadu 600007

St Francis International School
79, Gerugambakkam Main Road, Kolapakkam, Kanchipuram, Tamil Nadu 600122

Dr.C.L.Metha Sishya OMR School
Rajiv Gandhi IT Expy, Jothi Nagar, Thoraipakkam, Chennai, Tamil Nadu 600097

National Public School
228, Avvai Shanmugam Road, Gopalapuram, Chennai, Tamil Nadu 600086

Holy Sai International School
Jayalakshmi Nagar, Adhanoor,, Chennai, Tamil Nadu 603202

St Patrick's Educational Institutions
Gandhi Nagar, Adyar, Chennai, Tamil Nadu 600020

Navadisha institute
3rd Cross Street, Kalki Nagar, Velachery, Chennai, Tamil Nadu 600042

The Lords' International School
428/1, Munu-Adhi Road, Samathuva