schoolwork是不可数名词。schoolwork学校作业；课堂作业；课外作业；同homework一样。
例：
She used to bully me into doing my schoolwork.
她过去总是强迫我写作业。
相关介绍
He was shattered and too tired to concentrate on schoolwork.
他筋疲力尽，累得都无法集中注意力做作业。
Study hard and never neglect schoolwork.
要好好用功，不可荒废课业。
Family frictions can interfere with a child's schoolwork.
家庭中的争吵会影响孩子的学业。
Forty-eight of the students received instruction in study skills only, whereas the others attended a combination of study skills sessions and classes in which they learned about the growth mind-set and how to apply it to schoolwork.
其中，48个学生只接受了学习技能方面的指导，而其他的学生参加了有关学习技能、成长思维模式以及如何将其应用于学业中的混合课程。
