I was thinking along the lines of him doing his own enrichment completely in class. Like can he keep additional materials at his desk that he can read more widely on the topic the class is covering? They are discussing the role of insects in the ecosystem, and he is reading about the self-organization of insect colonies. If they have to write a small paper on how plants respond to sunlight, maybe he could turn in a bigger paper on the various tropisms and how they work.

Of course, you'd think a teacher could at least take a couple of minutes to write down some deeper topic areas that extend the topic at hand.