Law prohibits applicants in Category V from enlisting. In addition, there are constraints placed on Category IV recruits; recruits in Category IV must be high school diploma graduates but cannot be denied enlistment solely on this criteria if the recruit is needed to satisfy established strength requirements. Furthermore, the law constrains the percentage of accessions who can fall between Categories IV-V (currently, the limit is 20% of all persons originally enlisted in a given armed force in a given fiscal year).
 See two documents: Sims, W.H. and Truss, A.R., A Reexamination of the Normalization of Armed Services Vocational Aptitude Battery (ASVAB) Forms 6, 7, 6E, and 7E (Alexandria, VA: Center for Naval Analyses, September 1980); and Laurence, J.H. and Ramsberger, P.F., Low-Aptitude Men in the Military: Who Profits, Who Pays? (New York: Praeger, 1991).
Anyone who is planning to enlist in the United States Armed Forces should be familiar with the military’s standards and screening processes. An important part of this screening process is the Armed Forces Qualification Test (AFQT), which is a subsection of the Armed Services Vocational Aptitude Battery (ASVAB). This standardized assessment measures a candidate’s skills in the areas of paragraph comprehension, word knowledge, arithmetic reasoning, and mathematics knowledge.
The Armed Forces Tuition Assistance (TA) Program allows enlisted servicemembers and offers to enroll in courses at accredited colleges, universities, junior colleges, high schools, and vocational-technical schools. TA will pay up to 100% of the cost of the course and up to 100% of the cost of obtaining a high school degree, with a limit of $250 per credit hour and an aggregate annual limit of $4,500. MGIB benefits may be used to "top up" TA benefits, paying the difference between tuition and the TA benefits. Military.com provides a good overview of the tuition assistance program.
Mathematics Knowledge tests the ability to solve problems by applying knowledge of mathematical concepts and applications. The problems focus on concepts and algorithms, and involve number theory, numeration, algebraic operations and equations, geometry, measurement and probability. Mathematics Knowledge is one factor that characterizes mathematics comprehension; it also assesses logical thinking.
The exam is not a “pass or fail” test. Your score in each area reflects your own unique abilities. Of course, you will want to study with the aim of doing your best so that you can qualify for a job that fits your skills and career interests. Your AFQT score is compared to the scores of other recruits in the 18-23 year age bracket to see how your potential measures up.
The ASVAB is a population-referenced exam, which means that the score you receive for the ASVAB is not an exact measure of how you scored on the test, but rather how you scored in relation to a national control group who took the test in 1997. Standard Scores are used on the ASVAB: in each subtest, about 50% of the population received a Standard Score of 50, while only 16% scored over 60. You will receive an estimated score after taking the paper test and official scores later through your recruiter, usually within days. You will immediately receive your scores upon completing the computer test.
Candidates taking the ASVAB are given a AFQT (Armed Forces Qualifying Test) score which is simply a combination of your scores from four tests (Arithmetic Reasoning, Mathematics Knowledge, Word Knowledge, and Paragraph Comprehension). This AFQT score is represented as a percentile (from 1-99) which depicts how well you scored compared to other test takers. For example, if your score is a 57, this means that you scored better than 57% of the other test takers. The AFQT score is used to determine whether you are qualified to enlist in the U.S. Armed Forces.
The Armed Forces Qualification Test (AFQT) derives from the more comprehensive, 10-subtest Armed Services Vocational Aptitude Battery (ASVAB). Scores on the four ASVAB math and verbal subtests are used to calculate an AFQT score, which determines whether an individual is generally qualified to enlist. Performance on all 10 ASVAB subtests, meanwhile, ascertains an enlistee's qualifications for specialized work within the military and possible incentives for enlistment.
The AFQT is often mistakenly called the “overall ASVAB score.” You commonly hear someone say, “I got a 67 on the ASVAB,” or “My ASVAB score was 92.” That’s not correct; it implies that the AFQT is derived from all nine subtests of the ASVAB, and it’s not. The AFQT score is computed from just four of the ASVAB subtests that measure your math and communicative ability.
Military history has a number of facets. One main facet is to learn from past accomplishments and mistakes, so as to more effectively wage war in the future. Another is to create a sense of military tradition, which is used to create cohesive military forces. Still, another may be to learn to prevent wars more effectively. Human knowledge about the military is largely based on both recorded and oral history of military conflicts (war), their participating armies and navies and, more recently, air forces.
The Armed Services Vocational Aptitude Battery is the most widely used multiple-aptitude test battery in the world. As an aptitude test, the ASVAB measures your strengths, weaknesses, and potential for future success. The ASVAB also provides you with career information for various civilian and military occupations and is an indicator for success in future endeavors whether you choose to go to college, vocational school, or a military career.
The U.S. Armed Forces are one of the largest militaries in terms of the number of personnel. It draws its personnel from a large pool of paid volunteers. Although conscription has been used in the past in various times of both war and peace, it has not been used since 1972, but the Selective Service System retains the power to conscript males, and requires that all male citizens and residents residing in the U.S. between the ages of 18–25 register with the service.
In order to perform well on the ASVAB, you should take a practice test to get an idea of what you’ll encounter on the actual test. Also, completing a practice test will help you to feel more at ease on test day. Reading the test instructions and focusing your full attention on each question are both important steps to take. As you work through the test, avoid spending too much time on a single question. The test has a time limit and you don’t want to fall into the trap of running out of time before you arrive at the end of the test. Taking the time to provide thoughtful answers to test questions allows you to offer a clear picture of your skills and capabilities. Earning a high score on the ASVAB may give you more options when it comes to choosing a specialty.
One ASVAB sub-measure, the Armed Forces Qualification Test (AFQT)--which is just a separate analysis of the same tests that focuses only on four of the subtests--is also population-referenced, but its score from 1-99 is a percentile score. This means that if you score a 73, you scored as well as or higher than 73% of test-takers in the national sample.