Yes. This can be really useful to inform planning without doing extensive pre-teaching assessments.

When any assessments are made for a pupil, these are saved against their record. Any Classroom Monitor user who has access to a group that pupil is in will be able to see those assessments. 

To access assessments that were made in a previous year or by another teacher, you simply need to select the appropriate ability / year group in the markbook menu.

Related Help Page: Looking At Last Year's Data: How Do I Access Imported or Transitioned Data?