The DIBELS 8th Edition team provided the IDEL materials on this website as a courtesy for customers who were uploading IDEL data to the DIBELS Data System. However, the DIBELS Data System recently discontinued support for IDEL, and because we no longer have IDEL experts on staff at the University of Oregon, we determined that it would be best to retire the materials from our website. Our partners at Amplify have, with help from University of Oregon researchers, developed Lectura, which you can find on the Amplify website: https://amplify.com/programs/mclass-lectura/