@flankerpilot
I don't think that theres anything like recognised DGCA flying school abroad... It is the local civil aviation regulator who certifies the flying school in it's area (Like in Australia they are certified by CASA, UK by CAA)
I cannot say about DGCA but the airlines in India do have the flying school's blacklisted in their books...
It might be that captaan was referring to that list... If not then it would be really nice of captaan to give the list...