DIBELS stands for Dynamic Indicators of Basic Early Literacy Skills. This assessment is given 3 times in kindergarten - at the beginning, middle, and end of the year. There are 4 subtests given in kindergarten. They are Initial Sound Fluency (ISF), Letter Naming Fluency (LNF), Phoneme Segmentation Fluency (PSF) and Nonsense Word Fluency (NWF).