Correct letter sequences
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Correct letter sequences is a spelling measure that counts each pair of adjacent letters, including word boundaries, that are written correctly.
Topic: Measurement and data collection
In plain terms
Each word gets an imaginary space before the first letter and after the last. Every correct adjacent pair, from the start space to the first letter through the last letter to the end space, is one correct letter sequence. A four-letter word has five possible sequences. This gives credit for partly correct spellings, so growth shows before whole words are right.
How it shows up in an IEP
Spelling goals can use correct letter sequences on dictated word lists: "will write 60 correct letter sequences on a 2-minute dictated list." It is more sensitive than words spelled correctly, which helps when progress is slow.
Example
A student spells "jump" as "jup." Of the five possible sequences, three are correct: start to j, j to u, and p to end.
Related terms
- Correct word sequencesCorrect word sequences is a writing measure that counts each pair of adjacent words that is correctly spelled and grammatically acceptable in context.
- Curriculum-based measurement (CBM)Curriculum-based measurement is a set of brief, standardized, timed probes that measure a general skill, such as reading or math, to track growth over time.
- ProbeA probe is a brief check of a skill, given without teaching or help, to see what the student can do independently at that moment.
- Orthographic mappingOrthographic mapping is the mental process of connecting a word's sounds to its letters so the word is stored in memory and read instantly.
On IEP Atlas
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