Meaning of 課題 in Japanese

The teacher corrects our exercises.

It is imperative that we should encourage participatory forms of decision-making.

One problem is how the enterprises arrange posts for excellent female students, but another important point is whether the educational industry can grow and supply creative students needed for Japan's future.

In medical research, one of the first problems is to isolate the cause of the disease.

Ha - this work finished! Let's go to next stage!

The student concentrated on his subject.

We will discuss that later.

Now that I have finished this assignment I want to go to sleep, but I have to go to school.

This subject is not within the scope of our study.

You missed two assignments; you will have to make them up at once.