Complex sentence: An Anchor paper is, in standards based assessment, authentic assessment and Holistic grading, a test response in which a numeric score is assigned for typically both a scoring rubric, or set of rules, and an example paper or two for each level.
Split into simpler sentences: An Anchor paper is used in standards based assessment, authentic assessment and Holistic grading. It is a test response where a numeric score is assigned for both a scoring rubric or set of rules, and is also used as an example paper for each level.