i-Ready is used to provide diagnostic assessments 3 times a year for Stockton Unified School District students in grades K-12. The diagnostics provide key information on students' current skill level and their grade level status. Based on their diagnostic assessment results in math, i-Ready creates individualized learning pathways for each student to help her/him learn the skills s/he needs through on-line lessons. i-Ready specifically hones in on the skills students need to learn next and provides instruction at their Zone of Proximal Development. Teachers support students in their on-line learning by monitoring their progress and providing support when students have misconceptions.