Grace serves as a foil for Stratt (in a way, he’s the Watson to her Sherlock), but he’s just as important to the other people working to save humanity. In fact, the same skills that make him an effective middle school teacher endear him to the rest of the Project Hail Mary team.
Authentic enthusiasm: To keep middle schoolers’ attention, you have to be engaging – and the first step is to be genuinely interested in your subject. In Project Hail Mary meetings, Grace is the king of follow-up questions because he loves science and always wants to learn about new developments. This benefits the team in two ways: first, good follow-up questions are validating because they show that your work is interesting enough that someone wants to learn more. Second, when Grace asks questions, other people can learn without having to ask the questions themselves (which some people prefer to avoid).
Affirmation: Middle schoolers need to be told that they’re doing a good job, but adults crave this as well. Feeling blue because you’re a tree-loving hippy climatologist who finds himself ordering a nuclear strike on Antarctica? Already made the choice to put astronauts in comas but want someone to validate your decision? Want someone to admit that they don’t know what you’re going through and acknowledge how uncomfortable it is that you’re having to choose your preferred method of suicide? Find Ryland Grace and talk yourself through your problem in front of him – he’ll hear you out with empathy, and he’ll reinforce that you’re doing the right thing.
Giving proper credit: Gotta cite your sources; gotta acknowledge others’ hard work. In class, it’s very helpful to to say, “Let’s think back to that excellent point that so-and-so made.” In his Project Hail Mary work, Grace is constantly calling out who gets the credit… which means that if you do something significant, he’ll be sure to sing your praises when passing on new developments.
Putting aside past conflict: This is huge for dealing with middle school students, and Grace absolutely crushes it when collaborating with Dr. Lokken (the Norwegian scientist who calls him “infamous”). Even after a months-long dislike on both sides, Grace is able to set aside their personal conflict when Stratt asks that he evaluate her work. He hears her out, he asks questions, he shows enthusiasm, and he’s willing to declare her proposal “genius.” During their interaction, he laughs and jokes with her a couple times, and her own icy wall starts to melt. [How ‘bout that chemistry?]
At the same time, Grace isn’t close to anyone on a personal level, and Stratt is dead on when she diagnoses him as too risk-adverse to plunge into another serious relationship. But that’s just fine for a middle school teacher. When he misses his students, it’s as a collective: he misses the classroom interactions, not any specific individuals. When he thinks about his Project Hail Mary colleagues, he ranks Dimitri as the person he’d most like to hang out with again, but he acknowledges that the friendship was situational – they were colleagues, brought together by a shared goal.
Bonus: all the above also makes Grace an effective audience stand-in – we learn along with him, he asks/answers questions on our behalf, and he narrates his space adventures as if he were giving a class demonstration on how to make/test hypotheses.