C12 Systematic phonics

survived narrowedone dot per attack, oldest first

1. #1 narrowed 16 October 2026 · Torgerson, Brooks & Hall 2006; Department for Education and Skills Research Report RR711 (ISBN 1 84478 659 6) · target: claim-text

   In a UK government systematic review of randomised trials, systematic phonics compared with whole-language or whole-word teaching improved word-reading accuracy (d = 0.27) but its effect on reading comprehension (d = 0.24, four trials) was not statistically significant, so C12's claim that systematic phonics gives better reading comprehension is not established by randomised evidence.

   Strongest reading and verdict reasoning

   Steelmans to: C12 asserts better decoding and comprehension; the review restricted to randomised trials of systematic phonics against whole-language or whole-word approaches — exactly C12's comparison — and found the comprehension pooled effect non-significant under both fixed (0.24, approximate CI −0.03 to 0.51, p = .08) and random (0.35, ns) effects, with the weight of evidence judged weak; the Cochrane review of phonics for poor readers (McArthur et al. 2018) points the same way (comprehension SMD 0.28, −0.07 to 0.62, low quality).

   Why: Extra run 2026-10-16 (extra 3) Europe/Stockholm, ordered by Jonatan. C12's first turn (never targeted, the promotion rule). Full RR711 report read (PDF, not stored): 20 RCTs identified, all on initial reading teaching, children mostly 5–7; 14 compared systematic phonics with whole-language or whole-word approaches, 12 individually randomised and pooled: accuracy fixed d = 0.27 (0.10 to 0.45, p = .002), random d = 0.38 (0.02 to 0.73); sensitivity analysis without Umbach et al. 1989: fixed 0.20 (0.02 to 0.37, p = .03), random 0.21 (−0.03 to 0.44, p = .09); no significant difference between normally developing and at-risk children for accuracy. Comprehension: four trials (Leach & Siddall 1990; Lovett et al. 1989; Torgesen et al. 2001; Umbach et al. 1989), fixed 0.24, approximate 95 % CI −0.03 to 0.51, p = .08; random 0.35, ns. McArthur et al. 2018 (Cochrane CD009115.pub3, full text read via PMC6517252): poor readers, phonics vs no or non-literacy training; word-reading accuracy SMD 0.51 (0.13 to 0.90); comprehension SMD 0.28 (−0.07 to 0.62; 5 studies, 343). Kill withheld: decoding/accuracy still favours systematic phonics in both reviews, and the kill-condition requires a match on both. Limits: few, small and old comprehension trials; the reviews do not show phonics harms comprehension, only that a benefit is not established; the National Reading Panel (2000, on file) found comprehension gains clearest in the early years, from a broader set of studies including non-randomised ones. Not a preprint. First ledger entry on C12. Claim, Bounds, Ages and status rewritten same turn; brief and the practical rule updated.

2. #2 survived 20 October 2026 · Mathes, Denton, Fletcher, Anthony, Francis & Schatschneider 2005 · target: kill-condition

   In a randomised trial with at-risk first graders, a small-group programme that taught letter–sound links explicitly but without a planned order (Responsive Reading, guided-reading style with leveled, non-decodable books) was judged by its authors "essentially equally effective" as a systematic programme with a fixed scope and sequence (Proactive Reading), which would meet C12's kill-condition if it matched on both decoding and comprehension.

   Strongest reading and verdict reasoning

   Steelmans to: C12 dies where an approach without systematic phonics matches systematic phonics for at-risk beginners on decoding and comprehension; this trial ran exactly that head-to-head, with the same amount of extra teaching (40 minutes a day in groups of three, October to May), the same teachers' training hours and the same schools, against an alternative that still taught phonics explicitly — the strongest version of a non-systematic rival — and the authors' own summary was that the two were equally effective (overall average effect sizes .84 and .78 against enhanced classroom teaching).

   Why: Nightly-attacks 2026-10-20 Europe/Stockholm. Full text read (published article, PDF hosted by Southern Methodist University; stored privately). Six schools in a large urban Texas district, two first-grade cohorts; at-risk pupils randomised within schools to Proactive (n = 92), Responsive (n = 92) or enhanced classroom teaching only (n = 114); 78, 83 and 91 assessed at posttest. End of year (Table 5): Proactive above Responsive on WJ-III Word Attack, the decoding measure (difference 6.88 W-score points, SE 2.80, t = 2.45, p < .05; effect sizes against enhanced classroom 0.76 and 0.28; only Proactive beat the classroom group on Word Attack); no significant difference on Word Identification (3.23, SE 3.33), WJ-III Passage Comprehension (−1.31, SE 2.40) or CRAB-R Comprehension (−0.46, SE 0.58); neither programme beat the classroom group on passage comprehension. So the rival matched on comprehension but not on decoding, and the kill-condition (match on both) failed. Limits: one trial, about 80 pupils per arm, first grade only, English; both programmes were intensive small-group extras on top of good classroom teaching in high-performing schools; Responsive was explicit about letter–sound links, so this tests the planned order, not phonics versus none. Not a preprint. C12's first survival (now 1 of 3); resets its fruitless streak.