When they saw the teacher coming, they quickly scurried out of the classroom.

scurried 是动词 scurry 的过去式，scurry 的意思是"快速小步跑、匆忙移动"，常用来形容小动物或人快速躲藏的动作。这个词带有"慌张、偷偷摸摸"的意味。