Is your son interested in a path that might lead to graduate school? My best friend did his Master’s and then his PhD (in neuroscience) taught in English at La Sorbonne (which has a master’s in robotics, incidentally) and was able to then subsequently secure his French citizenship because he had been in the country for over 5 years. That said, he was a fluent French speaker before arriving (we did 8+ years of French Immersion in elementary and high school), and was used to university bureaucracy in a system without a lot of handholding (he went to University of Toronto for his undergrad, with its 80k undergrads).
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