The colleges participating in IISER are the 7 campuses of IISER.

They are:

Indian Institute of Science Education and Research, Bhopal

Indian Institute of Science Education and Research, Mohali

Indian Institute of Science Education and Research, Pune

Indian Institute of Science Education and Research, Kolkata

Indian Institute of Science Education and Research, Thiruvananthapuram

Indian Institute of Science Education and Research, Tirupathi

Indian Institute of Science Education and Research, Berhampur.

Bhopal has a intake of 260, while Mohali Pune Kolkata Thiruvananthapuram has intakes of 200 each.

Tirupati intakes 125 while Berhampur intakes 100 candidates.

Hope this helps.

Thank You.