You’re definitely not alone — this kind of situation trips up a lot of people who stutter or freeze, even if they’re totally fine speaking elsewhere. Roll call can feel weirdly high-pressure because it’s quick, expected, and everyone’s listening. Your idea of greeting your teacher before class is a smart one — it might ease that pressure a bit. Also, it can help to tweak your response (like just saying “Hi” or “Morning” instead of sticking exactly to the script) to break that mental block. And honestly, it’s okay if it takes a few seconds or if you freeze sometimes. That doesn’t say anything about your communication skills overall — you’re doing your best and that’s what matters.