iReady that our district has been using for 3 years. Ready Common Core allows the teachers to use resources and websites that they have already been used in their classrooms.
One of the programs that we will be using with the new mathematic series is IXL. IXL's math skills are aligned to the Common Core State Standards, the New Jersey Preschool Teaching and Learning Expectations, and the New Jersey Core Curriculum Content Standards, providing comprehensive preparation for the CCSS. With IXL's state standards alignments, you can easily find unlimited practice problems specifically tailored to each required standard.
Even better, IXL automatically tracks student progress and displays proficiency scores in the state standards reports. These reports allow you to quickly evaluate student aptitude and identify trouble spots.