It is critical to know how ASVAB scores are calculated and what they are used for.  The Armed Services Vocational Aptitude Battery (ASVAB) tests are used to identify whether a candidate is qualified to enlist in a particular branch of the U.S. Military.  The ASVAB test is also used to determine which military jobs (referred to as MOS for Military Occupational Specialties) a candidate is best suited for.  ASVAB scores can also be used by test takers to help explore which careers they may be a good fit for them – whether they go into the military or not. While no one officially passes or fails the ASVAB, each branch of the military has specific minimum scores required for enlistment.  Your scores also affect the type of military job, enlistment bonuses and salary you are eligible for.

Note: the Numerical Operations and Coding Speed sub-tests were eliminated from the ASVAB in 2002 and 2003. To compensate for these missing values, and to keep the Administrative Composite equal to those who took the ASVAB prior to the change, the Air Force loads a "dummy score" in place of the NO and CS sub-test scores for those who take the ASVAB after the change. The "dummy scores" used as replacement values are the average scores received on these two sub-tests from Air Force applicants for the 12-month period prior to the change.
There is another ASVAB score that's equally important, if not more so, because it is the score that determines if a person is eligible for military service. It's the Armed Forces Qualification Test score, or AFQT score. This score is calculated from only four of the nine Standard Scores on the ASVAB - Arithmetic Reasoning (AR), Mathematics Knowledge (MK), Paragraph Comprehension (PC), and Word Knowledge (WK). First, the WK and PC scores are added together, then the sum is doubled. This is known as the Verbal Expression (VE) score. The VE, MK, and AR scores are then added together, and the sum is the AFQT. This score is a straight percentile measure, expressed as a number from 1-99. The number is the percentage of people who scored lower than the test taker. For example, if a person receives an AFQT score of 63, that means that he did better on the test than 63% of the people who have taken it.

La Comprensión de lectura evalúa la capacidad de obtener información a través de material escrito. Los estudiantes leen diferentes tipos de fragmentos de distintas longitudes y responden preguntas según la información que se presenta en cada fragmento. Los conceptos incluyen identificar hechos mencionados y reformulados, determinar una secuencia de eventos, sacar conclusiones, identificar ideas principales, determinar el objetivo y el tono del autor, e identificar el estilo y la técnica.
El ASVAB está disponible en diferentes formas. Cada uno de ellos se utiliza de manera ligeramente diferente. La versión institucional de la prueba se utiliza en las escuelas secundarias, y los resultados del ASVAB de esta versión se utiliza para ayudar a los consejeros escolares guían a los estudiantes apropiarse de las trayectorias profesionales. La versión computarizada de la prueba es el examen completo y es utilizado por los militares para ayudar a determinar la elegibilidad de una persona para los militares, así como qué tipo de formación es el más apropiado. Una versión corta de la prueba puede ayudar a decidir si una persona es rey para tomar ASVAB completa, y repita la prueba después de la inscripción puede ayudar a determinar la elegibilidad para entrenar para diferentes puestos de trabajo.
After adding so much information to the aptitude test, there was a bit of difficulty interpreting the test results. In addition to that, a vast majority of test takers were deemed as being under qualified based on their test results. This is why the percentile change was made. It ensured that a 50% actually correlated with a person doing better than 50% of the test takers. Those revisions have worked hand-in-hand with the preparation of the armed forces.