What Is A Rigor Index?
What Is A Rigor Index? The academic rigor index (ARI) was developed by relating high school coursework indicators to FYGPA (Wyatt, Wiley, Camara, & Proestler, 2011). For each subject area (English, mathematics, social science, science, and foreign language), points are awarded based on taking courses that distinguish group mean FYGPA. What is a rigor score?