SGP Secondary English OS (Sec 1–4) — Full

SYSTEM: Education OS
SUBJECT MODULE: SGP Secondary English OS
SUBJECT_ID: SGP-SEC-ENG
YEARS: Sec1–Sec4
PRIMARY VERIFICATION GATE:
  - O-Level OS (Singapore)
SECONDARY PORTS:
  - Vocabulary OS (language substrate) (optional link)
  - Singapore City Education OS (SGP-SIN)
REFERENCE: CivOS (P0–P3, Z0–Z7)
PRIMARY PURPOSE:
  Convert reading + thinking + writing into stable exam performance by:
    - stabilising comprehension under time
    - enforcing command-word compliance
    - stabilising writing structure and language accuracy
    - improving transfer across unseen texts/prompts
    - achieving timed reliability with low volatility (P3)

P3 (SGP SEC ENGLISH):
  The student can:
    - comprehend unseen texts accurately under time (retrieval + inference)
    - answer exactly what the question asks (command-word compliance)
    - write coherent, structured responses with stable quality under time
    - transfer across genres/prompts without collapse
    - self-check and correct language errors reliably
    - recover after mistakes using a recovery protocol (GR4)

Z0 SKILL DIRECTORY (ENGLISH):
EN-Z0-01: vocabulary retrieval (precise meaning, not vague “sense”)
EN-Z0-02: sentence parsing (grammar + structure decoding)
EN-Z0-03: comprehension accuracy (literal + implied meaning)
EN-Z0-04: inference and evidence linking (quote→claim validity)
EN-Z0-05: command-word compliance (explain/describe/infer/compare/justify)
EN-Z0-06: summary extraction (signal vs noise)
EN-Z0-07: writing structure (thesis→points→evidence→link)
EN-Z0-08: paragraph engineering (topic sentence + development + closure)
EN-Z0-09: tone/register control (formal vs narrative)
EN-Z0-10: language accuracy (grammar, punctuation, spelling)
EN-Z0-11: editing/checking discipline (self-correction under time)
EN-Z0-12: timed endurance stability (quality does not collapse late-paper)
EN-Z0-13: transfer across unseen prompts/genres (exam signature)

Z1 FAILURE MODE DIRECTORY (ENGLISH):
EN-Z1-01: vocabulary drift → comprehension errors (GF1)
EN-Z1-02: question misread / command-word failure (GF1 signature)
EN-Z1-03: evidence mismatch (answers not supported by text) (transfer+discipline)
EN-Z1-04: inference fragility (cannot justify or link) (GF9 in language form)
EN-Z1-05: summary collapse (cannot extract; copies irrelevant parts)
EN-Z1-06: writing structure instability (rambling; no marks coverage) (GF6)
EN-Z1-07: language accuracy collapse under time (GF6)
EN-Z1-08: prompt/genre transfer collapse (unseen topic) (GF9)
EN-Z1-09: timed execution collapse (quality drops sharply) (GF6)
EN-Z1-10: practice without model (writes a lot, doesn’t improve) (GF2→GF9)
EN-Z1-11: late repair trap (GF7) (no runway)
EN-Z1-12: continuity fragmentation (GF11) (reset cycles)
EN-Z1-13: burnout tail (GF12) (fatigue → volatility → regression)

Z2 SENSOR PACK (ENGLISH):
GLOBAL PHASE SENSORS:
  P-S1 retrieval reliability (esp. vocab + common structures)
  P-S2 error histogram (comprehension vs writing vs language accuracy)
  P-S3 time-to-answer distribution (compre + writing segments)
  P-S4 transfer under wrapper variation (unseen texts/prompts)
  P-S5 timed stability variance (quality volatility)
ENGLISH SUBJECT SENSORS:
  EN-S1 vocabulary precision score (meaning + usage)
  EN-S2 comprehension accuracy under time (literal + inference)
  EN-S3 command-word compliance rate (answers match prompt)
  EN-S4 evidence linkage validity rate (quote→claim alignment)
  EN-S5 summary extraction score (signal capture)
  EN-S6 writing structure stability score (marks coverage)
  EN-S7 language accuracy rate under time (grammar/punct/spelling)
  EN-S8 prompt/genre transfer score (unseen prompts)
  EN-S9 endurance drop index (late-paper quality collapse)
  EN-S10 editing compliance rate (actually checks and corrects)
O-LEVEL PROOF HOOKS:
  OL-S3 timed vs untimed gap (quality under time)
  OL-S4 transfer gap under novelty (unseen texts/prompts)
  OL-S5 error-repeat density (language + structure repeats)
  OL-S6 repair latency vs horizon
  OL-S8 burnout risk proxy

Z3 REPAIR DIRECTORY (ENGLISH):
GR5 Language-Base Loop (core):
  - vocabulary precision building
  - sentence parsing drills
  - command-word training + compliance rewrites
GR1 Buffer Build Loop (spine mastery):
  - comprehension primitives + inference patterns
  - writing structures as reusable templates (not memorised essays)
GR3 Transfer Loop (unseen robustness):
  - weekly unseen text audits (different genres)
  - prompt/genre variation sets
  - evidence-linking verification drills
GR2 Error-Log Closure Loop (repeat elimination):
  - tag errors: vocab / misread / inference / evidence / structure / grammar
  - micro-drill root cause
  - retest until repeats collapse
GR4 Time-Pressure Loop (timed stability):
  - timed comprehension sets + timed writing micro-outputs
  - recovery protocol:
      re-read question → command-word → answer plan → execute → quick edit
GR6 Continuity Loop (anti-reset):
  - weekly minimums + consolidation windows
  - prevent missed-week drift (English regresses silently)
GR8 Early-Warning Thresholds:
  - if EN-S2/EN-S3/EN-S6 collapse → immediate repair
GR11 Pressure-Safety Scheduling (burnout control):
  - cap load below recovery capacity
  - protect consolidation + sleep
GR7 Masking Control (if tuition dependence present):
  - require independent timed outputs as proof

FAILURE TRACE (ENGLISH):
  EN-Z1-01 vocabulary drift →
  EN-Z1-02 question misread →
  EN-Z1-04 inference fragility →
  EN-Z1-06 structure collapse →
  EN-Z1-07 language accuracy collapse under time →
  EN-Z1-09 timed volatility →
  EN-Z1-11 late repair trap →
  O-Level underperformance

REPAIR TRACE (ENGLISH):
  GR5 language base (vocab + command words) →
  GR1 comprehension + structure spine →
  GR3 unseen audits + evidence-linking verification →
  GR2 closure of repeats →
  GR4 timed stability + edit protocol →
  GR6 continuity + GR11 pressure safety →
  P3 reliability across unseen papers

EARLY WARNING (ENGLISH):
  Trigger repair immediately if any are true:
    - EN-S2 comprehension accuracy under time below threshold
    - EN-S3 command-word compliance low (misread persists)
    - EN-S4 evidence linkage validity low (unsupported answers)
    - EN-S6 writing structure stability low (marks coverage inconsistent)
    - EN-S7 language accuracy drops sharply under time
    - OL-S3 timed gap widening (untimed ok, timed collapse)
    - OL-S4 transfer gap persists (unseen texts/prompts)
    - EN-S9 endurance drop index high (late-paper collapse)
    - OL-S6 repair latency exceeds remaining runway

P3 PROOF (ENGLISH):
  - EN-S2 comprehension accuracy high across 3 unseen texts
  - EN-S3 command-word compliance high across 3 papers
  - EN-S4 evidence linkage validity high (answers supported)
  - EN-S6 writing structure stable (marks coverage consistent)
  - EN-S7 language accuracy stable under time
  - OL-S3 timed gap small; P-S5 volatility low across 3 timed papers
  - OL-S4 transfer holds across 3 genre families
  - EN-S10 editing compliance high (errors corrected)

PORTS:
  - O-Level OS (Singapore)
  - Singapore Secondary Subject OS Directory (Hub)
  - Singapore City Education OS (SGP-SIN)
  - Singapore Nation Education OS (SGP)
  - W4 GF Library
  - W5 GR Library
  - (optional) Vocabulary OS (language substrate)