All of the assessments come with answer keys. The Performance Tasks come with instructional overviews and detailed rubrics which show all of the work for easy grading. The Alternate Assessments also come with rubrics.
The assessments in the Dynamic Assessment System, which contain technology-enhanced items, are automatically graded for teachers. There are direct links to remediation when students answer incorrectly so they can determine where their mistakes were made and get the help they need.