Final answer:
The National Research Program (NRP) provides statistics used in the development and update of the DIF formulas in Mathematics at a High School level.
Step-by-step explanation:
The subject of this question is Mathematics and it is of High School level.
The National Research Program (NRP) is a program that provides statistics used in the development and update of the Differential Item Functioning (DIF) formulas. These formulas are used in educational testing to identify and address potential biases in test items and to ensure fairness in assessment.
The NRP collects data from various sources, such as the National Center for Education Statistics and the Centers for Disease Control and Prevention. This data is then analyzed and used to enhance the validity and reliability of assessments used in educational settings.