Persons leaving the State are not checked on exit. Therefore it is not possible to give a reliable estimate of persons on particular types of immigration permissions, including Stamp 2 permissions, who have left the State.
A Stamp 2 immigration permission is granted to all international non-EEA students regardless of whether they are undertaking an English language course or a third level programme. There is no differentiation in the permission granted other than its duration. When granting a Stamp 2 immigration permission, the immigration officer must ensure that the course of study is listed on the Interim List of Eligible Programmes (ILEP).
Furthermore, anyone whose immigration permission is due to expire or has expired can apply to my Department requesting a change of immigration permission or to have their immigration permission extended.