1.3 Service Composites and Targeted Skill Planning

Armed Forces Classification Test AFCT

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1 Chapter 1: Guide Scope, AFQT & Service-Specific Policy

1.1 Editorial Scope and Service-Specific AFCT Policy 1.2 AFQT Meaning and Study Priorities 1.3 Service Composites and Targeted Skill Planning 1.4 Format-Agnostic Test Preparation and Pacing

2 Chapter 2: General Science (GS)

2.1 Life Science: Cell Biology, Human Anatomy & Genetics 2.2 Physical Science: Matter, Energy, Forces & Motion 2.3 Earth & Space Science: Geology, Meteorology & Astronomy 2.4 Chemistry Fundamentals: Atomic Structure, Elements & Chemical Reactions

3 Chapter 3: Arithmetic Reasoning (AR)

3.1 Word Problems: Rates, Ratios, Proportions & Percentages 3.2 Financial & Distance Math: Interest, Profit/Loss, Speed & Time 3.3 Work & Mixture Problems: Joint Rates & Percentage Concentrations 3.4 Multi-Step Problem Solving & Algebraic Word Problems

4 Chapter 4: Word Knowledge (WK)

4.1 General Academic & Technical Vocabulary 4.2 Context Clues, Synonyms & Antonyms 4.3 Word Roots, Prefixes & Suffixes (Etymology) 4.4 Advanced Technical & Operational Terminology

5 Chapter 5: Paragraph Comprehension (PC)

5.1 Identifying Main Ideas, Central Themes & Topic Sentences 5.2 Extracting Supporting Details & Factual Information 5.3 Drawing Logical Inferences & Author's Purpose 5.4 Analyzing Text Structure & Drawing Conclusions

6 Chapter 6: Mathematics Knowledge (MK)

6.1 Pre-Algebra & Number Operations: Exponents, Radicals & Order of Operations 6.2 High School Algebra: Linear Equations, Inequalities & Polynomials 6.3 Geometry Fundamentals: Angles, Triangles, Quadrilaterals & Circles 6.4 Coordinate Geometry, Perimeter, Area & Volume Formulas

7 Chapter 7: Electronics Information (EI)

7.1 Electrical Principles: Voltage, Current, Resistance & Ohm's Law (V=IR, P=VI) 7.2 Electric Circuits: Series, Parallel & Combination Circuit Analysis 7.3 Electrical Components: Resistors, Capacitors, Inductors & Transformers 7.4 Electronic Semiconductors, Transistors, Diodes & Logic Gates

8 Chapter 8: Auto & Shop Information (AS)

8.1 Automotive Systems: Internal Combustion Engines, Fuel & Ignition Systems 8.2 Automotive Mechanical Systems: Transmission, Suspension, Brakes & Cooling 8.3 Hand & Power Tools: Identification, Uses & Fasteners 8.4 Shop Practice, Woodworking, Metalworking & Safety Rules

9 Chapter 9: Mechanical Comprehension (MC)

9.1 Simple Machines: Levers, Pulleys, Inclined Planes & Mechanical Advantage 9.2 Force, Motion, Work & Power: Newton's Laws & Energy Transformations 9.3 Fluid Dynamics & Pressure: Pascal's Principle, Hydraulics & Pneumatics 9.4 Mechanical Components: Gears, Belts, Springs & Friction

10 Chapter 10: Spatial Assembly Practice (AO Skill)

10.1 Spatial Connections and Assembly Patterns

1.3 Service Composites and Targeted Skill Planning

Key Takeaways Explain This Topic AI

Each Service defines and uses its own classification composites; there is no universal AFCT line-score table.

Composite formulas, specialty requirements, and cutoffs should come from the current official program or classification source.

Practice scores and raw item totals cannot be converted reliably into official standard scores or composites.

Map each officially identified input area to the corresponding skill chapter, then maintain the other tested skills required by the scheduled administration.

Ask how a new result will be recorded under your Service's current policy before deciding to retest.

Last updated: July 2026

1.3 Service Composites and Targeted Skill Planning

Executive Summary: Services create their own classification composites and programs set their own requirements. A formula or cutoff copied from another Service, another program, or an old chart can misdirect study and career decisions.

Why this guide does not publish a universal line-score table

The same short label can have a Service-specific meaning.

Specialty and program requirements can change.

Official composites use standardized or converted scores, not raw practice totals.

The delivered test and the way results enter a personnel system are governed by Service policy.

DAFMAN 36-2664, for example, describes DAF Mechanical, Administrative, General, and Electronics aptitude areas. Navy rating qualification, Army MOS qualification, and Marine occupational classification are governed by their own current sources. That is evidence of distinct systems, not one interchangeable formula set.

A source-safe planning method

Obtain the current official requirement for the exact program, specialty, or rating.

Obtain an authorized score report and ask a counselor or program owner which skill areas feed the required composite.

Match those areas to this guide: verbal, arithmetic, mathematics, science, electronics, auto/shop, mechanical, or spatial reasoning.

Build practice around weak concepts while retaining broad readiness for every area the authorized test site says will be administered.

Recheck the official requirement before scheduling because a cutoff or eligibility rule may change.

Do not hand-calculate official outcomes

A practice percentage is useful for tracking learning, but it is not an official subtest standard score. VE conversion, equating, and Service composite calculation prevent reliable conversion from a commercial practice set. Use practice data to find weak concepts, not to promise an AFQT percentile, composite, or qualification result.

Record consequences are Service-specific

Army: HRC says an AFCT retest covers all portions and the latest attempt replaces previous Army personnel-test scores.

Navy: MILPERSMAN 1236-010 makes the most recent AFCT scores the Navy official scores of record even if lower, with a separate caveat for the initial enlistment ASVAB display.

DAF: DAFMAN 36-2664 prohibits combining administrations and uses the most recent result as the official DAF record.

Marine Corps: follow current Test Control and confirmation-testing policy; MARADMIN 264/24 includes a circumstance in which existing MCTFS scores remain.

Because these rules are not identical, ask the appropriate test-control office what will happen to your record before retesting.

What to keep from the rest of this guide

The science, mathematics, vocabulary, reading, electronics, auto/shop, mechanical, and spatial lessons are editorial skill instruction. They remain useful without claiming that every AFCT form contains every area or that any lesson has a fixed weight.