The Rhode Island Growth Model
The Rhode Island Growth Model (RIGM) is a statistical model that provides a new way of looking at student achievement. The Growth Model enables us to look at growth in addition to proficiency to get a fuller picture of student achievement.
Using this model, we can calculate students’ progress relative to their academic peers on the PARCC assessment (Partnership for Assessment of Readiness for College and Careers) in Mathematics and English Language Arts/Literacy for grades 4-8. Academic peers are students who have scored similarly on the PARCC in the past. The Growth Model provides students, parents, teachers, districts, and the state with another piece of data that contributes to a fuller, more descriptive picture of student achievement. Because all students’ scores are compared only to those of their academic peers, students at every level of proficiency have the opportunity to demonstrate growth in their achievement.