Why this works

SEC is the most learnable section.

Reading questions ask you to interpret; conventions questions ask you to apply a rule. Rules can be learned to near-certainty. The four families below cover essentially every SEC item the Digital SAT can ask — and the Error Log inside each session shows your accuracy in each family climbing across the ten hours.

Boundaries

Boundaries

  • Session 01. The Two-Clause Engine & SEC Diagnostic
  • Session 02. Sentence Boundaries — Run-ons, Splices & Fragments
  • Session 03. Clauses, Conjunctions & Connectors
Punctuation

Punctuation

  • Session 04. Commas — The Four Legal Jobs
  • Session 05. Semicolons, Colons & Dashes
  • Session 06. Apostrophes & Possession
Form & Agreement

Form & Agreement

  • Session 07. Subject–Verb Agreement
  • Session 08. Pronouns — Agreement, Clarity & Case
  • Session 09. Verbs & Modifiers
Mixed

Mixed / Exam

  • Session 10. Mixed SEC Mock & Error-Log Clinic
The ten sessions

Boundaries → Punctuation → Form → Mixed.

#SessionSub-skillWhat you'll masterPractice
Phase 1 · Boundaries
01The Two-Clause Engine & SEC DiagnosticBoundariesIC vs DC — the one engine behind every SEC question; set a baseline by sub-skill4 guided · 6 timed · 4 home
02Sentence Boundaries — Run-ons, Splices & FragmentsBoundariesRun-ons, comma splices and fragments; the four legal ways to join two clauses4 guided · 6 timed · 4 home
03Clauses, Conjunctions & ConnectorsBoundariesFANBOYS vs. subordinators vs. conjunctive adverbs — what each joiner is allowed to do4 guided · 6 timed · 4 home
Phase 2 · Punctuation
04Commas — The Four Legal JobsPunctuationThe only four jobs a comma may legally do; kill the splice and the rogue comma4 guided · 6 timed · 4 home
05Semicolons, Colons & DashesPunctuationSemicolon = period's cousin; colon after a complete clause; the paired-dash rule4 guided · 6 timed · 4 home
06Apostrophes & PossessionPunctuationits vs. it's; singular vs. plural possessives; the apostrophe that isn't needed4 guided · 6 timed · 4 home
Phase 3 · Form & Agreement
07Subject–Verb AgreementFormFind the true subject; ignore interrupters; collective nouns & indefinite pronouns4 guided · 6 timed · 4 home
08Pronouns — Agreement, Clarity & CaseFormAntecedent agreement; ambiguous it/this; who vs. whom; pronoun case4 guided · 6 timed · 4 home
09Verbs & ModifiersFormTense timeline; dangling & misplaced modifiers; parallel structure4 guided · 6 timed · 4 home
Phase 4 · Integration
10Mixed SEC Mock & Error-Log ClinicMixedAll sub-skills mixed under time; audit every miss; target your weakest family4 guided · 6 timed · 4 home