The problem might be keeping the kids interested and involved in their studies, especially when there's a hostile group putting the heads of your neighbors on pikes.

 

Are they struggling? Lydia was struggling but she's new. Gracie, who is only about 8, knew the word "received". I think they were actually trying to contrast the Alexandrian kids with Lydia, showing that Alexandria is actually doing pretty good with that stuff. That's why they showed a much younger child having to assist Lydia.