Using a Spelling Inventory to Choose What to Teach Next
A third-grade spelling inventory of 20 words yields 11 correct. The student spells bed, ship, lump, float, spoil, marched, bottle, and four other words correctly. Errors include trane (train), site (sight), clowd (cloud), rideing (riding), wated (waited), cattel (cattle), visable (visible), competetion (competition), and musicain (musician). She reads grade-level text accurately, writes fluently, and spells the same misspelled word differently on different days.
1. Place her spelling development using the feature counts, not the total score, and justify the placement.
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Count by feature:
- Short vowels and basic patterns (bed, ship, lump): secure.
- Within-word long vowels and diphthongs: mixed. Float and spoil are correct, but train → trane, sight → site, and cloud → clowd show the patterns are not yet reliable.
- Syllable juncture (inflected endings, doubling, drop-e, consonant-le): the largest error cluster-rideing, wated, cattel-though marched and bottle are correct, so this feature is emerging rather than absent.
- Derivational relations (-able, -tion, -ian): visable, competetion, musicain-essentially all failed.
Placement: late within-word pattern stage moving into syllable juncture. The total of 11/20 would suggest a lower stage; the feature breakdown shows the single-syllable base is nearly in place and the errors have moved to where syllables meet.
2. Which feature should be the focus of word study now, and which should deliberately wait? Defend the order.
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Focus now: syllable juncture, specifically drop-e before a vowel suffix (riding), doubling and consonant-le (cattle vs. bottle), and inflected endings (waited vs. wated).
Why now: it is the largest error cluster, the errors are productive (she applies the wrong pattern consistently, which means she has a pattern to revise rather than a gap to fill), and these spellings appear constantly in her daily writing, so instruction gets immediate practice.
Wait: derivational relations (-tion, -able, -ian). Three reasons: (a) those spellings depend on knowing the base word's structure, which assumes stable syllable juncture; (b) they are lower-frequency in third-grade writing, so the return on instructional time is smaller; (c) teaching all four layers at once would give her no way to tell which pattern she is supposed to be applying. The bottle/cattel contrast is the useful starting point, because it shows she already controls the pattern in some words.
3. She spells the same word differently on different days. What does that change about your interpretation and about how you would assess her?
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Interpretation: inconsistent spelling of the same word is evidence that the pattern is not automatized, not evidence that she "knows" it. A single correct spelling should not be scored as mastery, and a single error should not be scored as absence. This also means the 11/20 total is a snapshot with error, not a fixed level; the feature profile is the more stable signal.
Assessment change: sample the target feature across several short, unedited writing samples over two to three weeks rather than relying on one inventory. Score by feature (does she apply drop-e correctly in new words?) rather than by whole-word accuracy, and include transfer words not taught directly. If a feature is correct in isolation but wrong in connected writing, that is a practice/automaticity issue, not a knowledge issue-and the instructional response is more writing with feedback, not a new lesson.