  In this proceeding we discuss the status of the currently running experiments
and the capability of the future proposed experiments to study neutrino
oscillation. In particular, we discuss the current results of the
accelerator-based long-baseline experiments in the standard three-flavour
scenario and for a scenario where one assumes the existence of a light sterile
neutrino at the eV scale in addition to the three active neutrinos. Further, we
also discuss the capability of the future long-baseline experiments to study
these scenarios.
