Focusing Your Study - As you take more and more sample tests you begin to get a feel for the topics that you know well and the areas that you are weak on.  Many students waste a lot of valuable study time by reviewing material that they are good at (often because it is easier or makes them feel better).  The most effective way to study is to concentrate on the areas that you need help on.
The Armed Forces Qualifying Test, commonly known as the AFQT, is used by the United States military to assess prospective service members. The questions on this test are taken from the Armed Forces Vocational Aptitude Battery. The following ASVAB subject areas are included in the test: arithmetical reasoning (AR), mathematics knowledge (MK), verbal expression (VE), paragraph comprehension (PC), and word knowledge (WK). These are the most general academic content areas on the ASVAB. The formula for computing scores on the AFQT test is AR + MK + (2 x VE), with VE = PC + MK. Scores are then placed in the following categories: Category I (93 to 99), Category II (65 to 92), Category IIIA (50 to 64), Category IIIB (31 to 49), Category IVA (21 to 30), Category IVB (16 to 20), Category IVC (10 to 15), and Category V (0 to 9). These AFQT test score categories are percentiles, which indicate how well the test-taker performed relative to others. A person scoring a 50, for example, performed as well as or better than half of the other test-takers. The percentile score is based on the raw score (number of questions answered correctly) and the difficulty of the test version. The minimum passing score for the AFQT varies between branches of the military.
In addition, your scores on the other ASVAB composite tests will determine your career field or military occupation eligibility. Since enlistment bonuses are usually tied to your choice of occupations, the better the score, the more opportunities you have. But keep in mind, it is impossible to literally "ace" the ASVAB, so your goal should be to simply do your best.
One set of ASVAB scores – Career Exploration Scores – tells you your current strengths in verbal, math, science, and technical skills.  The scores allow you to compare your test performance with that of other students at your grade level and can help you determine your readiness for further education and training in different career areas.  You will also receive a Military Entrance Score that is important for entry into the Armed Services.  You can discuss your score with a military recruiter.
How good is your vocabulary? It’s never too late to brush up by using “vocabulary builders” you find on Google, reading a variety of books, manuals and magazines, and using practice tests to identify words that you’re not sure of. The WK section tests your word knowledge in several ways. First, it tests whether you can recognize correct and incorrect spellings of words. For this type of question, you may want to review words that are often spelled incorrectly, and make sure you know how to spell them. You will also need to know the definitions of words, and be able to use them in a sentence. The more you practice, the better you will be at automatically recognizing the right spelling of a word, and the easier it will be to know it’s precise meaning when it’s used in a sentence.

A military recruiter determines if the candidate is a possible recruit. A recruiter will ask about marital status, health, education, drug use, and arrest record. It is important for the candidate to be upfront and truthful when answering questions. Once the recruiter has determined the individual is qualified for additional processing, the ASVAB is scheduled. A physical examination may also be conducted at the time of the test. 

The percentages of FY 1999 active duty NPS accessions in each AFQT category are shown in Table 2.8. The percentage of recruits in Categories I and II was approximately the same as their civilian counterparts (males - 39 versus 39 percent; females - 34 versus 33 percent). Category III accessions greatly exceeded civilian proportions (males - 61 versus 30 percent; females - 66 versus 37 percent), while the percentage of recruits in Category IV was much lower than in the civilian population (males - 1 percent versus 20 percent; females - less than 1 percent versus 22 percent). The low percentage of Category IV recruits is, in part, a result of DoD limits of 4 percent Category IV recruits, with even lower Service limits. Ten percent of civilian males and 9 percent of civilian females scored in Category V; DoD allows no Category V recruits.
There are two types of military history, although almost all texts have elements of both: descriptive history, that serves to chronicle conflicts without offering any statements about the causes, nature of conduct, the ending, and effects of a conflict; and analytical history, that seeks to offer statements about the causes, nature, ending, and aftermath of conflicts – as a means of deriving knowledge and understanding of conflicts as a whole, and prevent repetition of mistakes in future, to suggest better concepts or methods in employing forces, or to advocate the need for new technology.
The military organization is characterized by a strict hierarchy divided by military rank, with ranks normally grouped (in descending order of authority) as officers (e.g. Colonel), non-commissioned officers (e.g. Sergeant), and personnel at the lowest rank (e.g. Private Soldier). While senior officers make strategic decisions, subordinated military personnel (soldiers, sailors, marines, or airmen) fulfil them. Although rank titles vary by military branch and country, the rank hierarchy is common to all state armed forces worldwide.
In the 2000s, women can serve on U.S. combat ships, including in command roles. They are permitted to serve on submarines.[39] Women can fly military aircraft and make up 2% of all pilots in the U.S. Military. In 2003, Major Kim Campbell was awarded the Distinguished Flying Cross for landing her combat damaged A-10 Thunderbolt II with no hydraulic control and only one functional engine after being struck by hostile fire over Baghdad.
Test scores provide only one measure of your skills and abilities.  Test scores and grades, combined with information about your interests, values, skills, and achievements may help you select appropriate occupations for career exploration.  As you explore careers, you can compare your skills with the skill requirements of occupations in which you are interested.