Someone's neeveitude refers to how well they are keeping up with work. A high neeveitude means they're way ahead of everyone else, a neeveitude of 0 means they're on track, and a low neeveitude means they're getting behind.
Report Card - "Jeremy has been doing very well this year, with a particularly high neeveitude."
Pavel - "I'm gonna have to put a lot of work in if I want to get my neeveitude back up..."
Percy: "If I don't get my neeveitude up soon, they're gonna chuck me out of college."