Shukudai (宿題) means 'homework' or an 'assignment' given by a teacher to students. It's tasks students need to complete outside of class, usually at home. For example, if you have many assignments, you can say '宿題がたくさんあります' (I have a lot of homework).

先生が学生に出す、家でやる「課題」のことです。例：宿題がたくさんあります。