if the training is physical i.e., class room then if the training campus is in India then GST Applocable otherwise no GST is applicable.
if the training is over online mode, then place of sercixe receiver is place of supply i.e., India in your case and hence RCM is applicable.
SAC code for SAC CODEDescripttion 9992 Education services 99929 Other education & training services and educational support services 999293 Commercial training and coaching services