Junior high classes in the department have moved away from the Chinese tradition of dividing students into separate classes based on achievement.
實驗室裡，大老遠的就傳來一陣陣笑聲，那是國二學生在做化學實驗。正在進行的是「酸鹼滴定」反應觀察。這是個步驟麻煩、時間長，又有些兒危險的實驗。同學們必須細心地測定酸鹼藥粉的分量、分別加以稀釋，再用滴定管觀察二者中和反應。