Final answer:
Giving a test or quiz without assigning grades is known as formative assessment, used to monitor and improve learning and teaching.
Step-by-step explanation:
Giving a test or quiz for the purpose of gathering information and providing feedback, but not for assigning grades, is called formative assessment. This educational practice is aimed at monitoring student learning to provide ongoing feedback that can be used by instructors to improve their teaching and by students to improve their learning. Formative assessments help teachers identify where students are struggling and determine how to address problems immediately. They can take many forms, such as quizzes, surveys, observations, or reviews of student work. Unlike summative assessments, which evaluate student learning at the end of an instructional period by comparing it against some standard or benchmark, formative assessments are typically not used for grading purposes.