What are DIBELS?
The Dynamic Indicators of Basic Early Literacy Skills (DIBELS) are a set of standardized, individually administered measures of early literacy development. They are designed to be short (one minute) fluency measures used to regularly monitor the development of pre-reading and early reading skills.
Students are tested in a variety of areas, based on their grade level:
• First Sound Fluency (FSF):
Can the student identify the first sound when given a word orally?
• Letter Naming Fluency (LNF):
Can the student identify letters, both upper, and lower case?
• Phoneme Segmentation Fluency (PSF):
Can the student identify each individual sound (phoneme) when given a word orally?
• Nonsense Word Fluency-Correct Letter Sounds (NWF-CLS):
Can the student sound out and identify individual letter sounds using nonsense words they wouldn't recognize?
• Nonsense Word Fluency-Whole Words Read (NWF-WWR):
Can the student decode nonsense words as whole words, using phonemic awareness?
• Dibels Oral Reading Fluency (DORF):
How many words per minute can the student read from a grade level text?
• DORF Accuracy:
What percentage of words read orally are correct?
A cloze reading assessment of vocabulary and comprehension
The DIBELS Composite Score is a combination of multiple DIBELS scores and provides the best overall estimate of the student’s early literacy skills and/or reading proficiency.
Every elementary age student in the Tigard-Tualatin School District participates in DIBELS testing three times per year. The information gathered from these assessments helps us to identify students who are lacking specific pre-reading and early reading skills, so that we can better provide the instruction that they need.