grading

I do the grading.

私は採点をします

I do the grading in the staff room.

私は職員室で採点をします

I do the grading in the staff room with my colleague.

私は職員室で同僚と採点をします

I do the grading in the staff room with my colleague after class.

私は職員室で同僚と授業の後に採点をします

I do the grading together in the staff room with my colleague after class.

私は職員室で同僚と授業の後に一緒に採点をします