No, it isn't surprising but I think that the rest of the statement would be surprising to many (including some in this thread based on previous comments) as the narrative being put out there by the media and DACA supporters is that they "kids" are highly patriotic, continuing education, and are assets to the country. The data paints a different picture.
I mean I don't disagree. It was disheartening to watch some of the kids I coached who had dreams of going to college unable to do so because they simply couldn't get scholarships as there are very few for undocumented citizens and to get those is highly competitive. The one is about to finish college next year though but he basically had a perfect 4.0 to get a scholarship.