There is an artificial restriction that prevents migrating questions that are more than 60 days old.
In any case, we wouldn't migrate an on-topic question. Questions about computer science education are firmly on-topic on this site, regardless of what other Stack Exchange sites exist. The question in question is borderline, since it's about programming education, not computer science education. However, we tend to be more accepting of programming education questions here than programming questions, because programming is largely taught by computer scientists.