"Academics? No. Behavioral, well. You've seen," Jim says, thinking it doesn't need to be spelled out at this point. He is not exactly the model of propriety. "So we're hoping I can fly under the radar for the rest of term and keep my nose clean."
Other options:
no subject
"Academics? No. Behavioral, well. You've seen," Jim says, thinking it doesn't need to be spelled out at this point. He is not exactly the model of propriety. "So we're hoping I can fly under the radar for the rest of term and keep my nose clean."