The primary purpose of assessment is to improve students’ learning and teachers’ teaching as both respond to the information it provides.
http://assessment.tki.org.nz/Assessment-in-the-classroom/Underlying-principles-of-assessment-for-learning/Purposes-of-assessment
Summative:
Purpose to collect data that:
Formative Tools
Formative assessment tools enable students share to have clarity over what success looks like and how they will achieve it.
The literacy team have put together tools that can be used from Level 1 to Level 6 to assist students in achieving writing tasks and assessments across the curriculum.