Dental Admission Test
The Dental Admission Test is a multiple-choice standardized exam taken by potential dental school students in the United States and Canada. The DAT is a computer based test that can be administered almost any day of the year. Tests are taken at testing centers throughout the United States after the through the American Dental Association is completed. Each applicant may only take the test a total of three times before having to ask special permission to take the exam again. After taking the exam you must wait 90 days before repeating it. Each exam costs $475, all of which is non-refundable.
Test sections
The DAT comprises four sections: survey of the natural sciences, perceptual ability, reading comprehension, and quantitative reasoning. The mathematics of the quantitative exam is similar to that of the SAT. The first section is divided into questions about biology, general chemistry, and organic chemistry. The second section is divided into six different problem sets designed to test perceptual ability, specifically in the areas of three-dimensional manipulation and spatial reasoning. The third section of the DAT is divided into three academic essays, each of which is followed by questions about the passage's content. The final section tests basic mathematics skills, with emphasis placed on algebra, critical thinking, fractions, roots, and trigonometric identities.Test Breakdown
| Section | Questions | Time Limit |
| Optional Tutorial | 15 Minutes | |
| Survey of Natural Sciences | 100 | 90 Minutes |
| -Biology | 40 | |
| -General Chemistry | 30 | |
| -Organic Chemistry | 30 | |
| Perceptual Ability Test | 90 | 60 Minutes |
| -Keyhole | 15 | |
| -Top/Front/End Visualization | 15 | |
| -Angle Ranking | 15 | |
| -Hole Punches | 15 | |
| -Cube Counting | 15 | |
| -Pattern Folding | 15 | |
| Optional Break | 30 Minutes | |
| Reading Comprehension Test | 50 | 60 Minutes |
| Quantitative Reasoning Test | 40 | 45 Minutes |
| -Mathematics | 30 | |
| -Applied Mathematics | 10 | |
| Optional Post-Test Survey | 15 Minutes | |
| Total | 280 | 5:00 Hours |
Changes to the Test
The test specifications for the Biology section changed in 2014. Such changes reflected a shift on the way that Biology is taught in survey courses. This means that the questions now focus on "complex interactions within biological systems, rather than viewing biology in a reductionist manner". There are also changes to the Quantitative Reasoning section. It has been "revised to eliminate the sections for numerical calculations, conversions, geometry, and trigonometry. Items have been added in the following areas: data analysis, interpretation, and sufficiency; quantitative comparison; and probability and statistics." During 2014 and 2015, examinees may have seen some questions that reflect such changes, however, they weren't scored. Actual changes to the sections didn't take place sooner than 2015.
Scores
Immediately after completion of the test, eight standard scores on a scale of 1-30 are calculated and passed on to the test taker. The first six scores come directly from the test: perceptual ability, reading comprehension, quantitative reasoning, biology, general chemistry, and organic chemistry. The remaining two scores reported are summaries of the previous six: the Academic Average is the average of five scores rounded to the nearest whole number: quantitative reasoning, reading comprehension, biology, general chemistry, and organic chemistry. The Total Science score is a standard score based on all 100 questions in the biology, general chemistry, and organic chemistry tests. Dental schools frequently summarize their applicant's scores by listing the academic, science, and perceptual ability scores they typically see in their matriculating classes.The mean score for any scored section is set at 17, with the exception of the reading comprehension section, in which the 50th percentile score is a 19. Scores above and below this represent fractions of standard deviations from the mean. This probabilistic scoring system results in the maximum not occurring for the compiled section scores in a given year. For example, in 2003 a 25 academic average was labeled as 100.0th percentile, such that less than eight people received this score, and none higher.
The mean academic average score for admissions is commonly 19. There are varying perspectives on the relative importance of sections, wherein the PAT or reading comprehension can be viewed as the most important or conversely, ignored. The PAT in particular is most often viewed as a threshold score, and therefore is the only score not included in the academic average; the threshold varies between 16 and 18.