Another girl asked him a question, making him jump slightly. "Erm... judging by what the book says, I think it's a flobberworm," he explained. "Though, don't take my word for it. I could be wrong," he quickly added, doubting himself. He wasn't too sure in his answer but it seemed correct based on the illustration in the book.
As more and more students started to enter and take their seats, Lucas noticed a boy sit even further back than he did. He presumed that meant that the kid either didn't want to be there or that he was too shy to interact with people, much like himself. Either way, Lucas gave him a small, friendly smile, trying to make a friend of his own accord, rather than letting people approach him first.