Generally speaking, Curse Course is the most suitable for idle chatter.
Because a significant portion of the class is devoted to practice, students need to hold the Law book and loudly recite the spells written on it; sometimes, the professor would also bring in some small animals—such as mice, sparrows, and the like—as experimental subjects, adding to the classroom's degree of chaos.
In such a classroom, idle talk is usually not overheard, and even if it is, others tend not to care.
But today's Curse Course was not suitable for idle chatter.
After Old Yao stood at the lectern, he spent half the class reviewing the key points of the curses that were taught last semester; then he used the remaining half to go over the final exam papers from last semester.