As Howard mentioned, one of the obstacles to retaining these international students is to create some sort of match with the jobs available in the local area, as well as an awareness of the availability of those jobs among the students.
Even if there are opportunities, students are not necessarily aware of where to go to find that information, so there is a slight disconnect in job availability. I think these days universities are working with the community as well as businesses and providing job fairs, and those are probably very important venues to explore further.
That said, I am launching new research looking at whether or not the experience in Atlantic universities is turning into permanent residency, and after they become permanent residents, whether or not the prior experience as a temporary resident, such as being a student or a temporary worker, is likely to influence them to stay in the region or if they're more likely to migrate elsewhere for better opportunities. I am just looking at the data for that information.