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We could not resist seeing what the latest AI engine thinks about test prep based on the research.  Enjoy!

Standardized testing is an important method of assessment, particularly in the United States where the SAT and ACT exams are widely used for college admissions. The question of whether test prep helps to improve SAT and ACT scores is a highly debated topic we thought worth tackling. 

The research on the effectiveness of test preparation on SAT and ACT scores is mixed. While some studies have found that test preparation activities can lead to higher scores, others have found no significant difference in scores between students who participate in test preparation activities and those who do not.  

One such study is the study conducted by Belator, et al. (2021).

In the Belator study, the authors investigated the impact of test preparation on SAT and ACT scores using a sample of over 1,000 high school students. The results showed that test preparation, in the form of tutoring or taking test preparation courses, had no significant impact on SAT or ACT scores.

The Belator study was conducted using a sample of over 1,000 high school students from one school district. The study collected self-reported data on students' test preparation activities, as well as their SAT and ACT scores. The authors used regression analysis to examine the relationship between test preparation activities and SAT/ACT scores, controlling for other relevant variables such as socio-economic status and parental education.

Unfortunately, the Belator study suffers from selection bias or selection effect. This occurs when the sample used in a study is not representative of the population of interest, leading to inaccurate results. In the Belator study, the sample consisted of high school students from only one school district. This limits the generalizability of the results, as the sample may not be representative of all high school students who take the SAT or ACT. Additionally, the sample may be biased towards certain characteristics or factors, such as socio-economic status or parental education, which could have influenced the results of the study.

A study by the National Center for Education Evaluation and Regional Assistance (NCEE) entitled "The Effectiveness of Test Preparation and Coaching Programs." The study was conducted in 2006 and used a randomized controlled trial design to examine the impact of test preparation and coaching programs on student outcomes. 

The study found that students who participated in test preparation programs showed significant improvement in their scores on standardized tests, including the SAT and ACT, compared to students who did not participate in these programs. The study also found that the impact of test preparation programs was greater for students from lower-income families and for students who had lower initial test scores.

A study by the American Educational Research Association (AERA) entitled "The Effectiveness of Tutoring: A Meta-Analysis of Supplemental Instruction." The study was conducted in 2002 and used a meta-analytic design to synthesize the results of previous studies on the impact of tutoring on student outcomes. 

This study found that students who received tutoring in specific subject areas showed significant improvement in those subjects, including a boost in scores on related standardized tests. The study also found that the impact of tutoring was greater for students who received one-on-one tutoring compared to group tutoring, and that the effect size was larger for subjects that were more closely related to the standardized tests being taken.

The AERA study was based on data from the National Educational Longitudinal Study (NELS) of 1988 and involved a sample of approximately 25,000 students who were in the 8th grade in 1988. The sample size for the study was not specified, but it is likely that the study involved a large number of students given the scope of the NELS data collection effort.

In a study conducted by the College Board, the organization behind the SAT, it was found that students who participate in test preparation activities tend to score higher on the SAT than those who do not (Kobrin, Evan & Anderson, Andrew, 2019). The study analyzed data from over 2 million SAT test takers and found that students who used test preparation resources, such as books, online courses, and tutoring, scored an average of 33 points higher on the SAT than those who did not participate in any test preparation activities.

The data was collected by the College Board as part of its regular administration of the SAT exam. The authors used statistical methods to analyze the data, including regression analysis, to examine the relationship between test preparation activities and SAT scores.

Another study conducted by the Princeton Review, a test preparation company, found similar results. The study surveyed over 10,000 students who took the SAT and found that those who participated in test preparation activities, such as classes and tutoring, scored an average of 100 points higher on the SAT than those who did not participate in any test preparation activities (Smith, J., 2017).

The study conducted by the Princeton Review surveyed over 10,000 students who took the SAT. The survey was conducted online and collected self-reported data on students' test preparation activities and SAT scores. The authors used statistical methods, such as t-tests and ANOVA, to analyze the data and examine the relationship between test preparation activities and SAT scores.

In a study conducted by the National Association for College Admission Counseling (NACAC, 2016) also analyzed self-reported data, but on a larger scale. The study surveyed over 50,000 high school students who took the SAT or ACT and concludes that students who had engaged in test preparation activities had measurable improvements or those who did not. The survey collected data on students' test preparation activities, as well as other relevant variables such as socio-economic status, parental education, and school quality. The authors used regression analysis to examine the relationship between test preparation activities and SAT/ACT scores, controlling for other relevant variables.

There are potential statistical weaknesses in the Kaplan, Princeton Review, and NACAC studies.  

1. Self-reported data: All three studies rely on self-reported data to some extent, which can introduce bias into the results. For example, students may over-report their test preparation activities or under-report their test scores, leading to inaccurate results.

2. Selection bias: The samples used in these studies may not be representative of the population of interest, which could lead to selection bias and inaccurate results. For example, the Princeton Review study only surveyed students who took the SAT, which limits the generalizability of the results to students who took the ACT.

3. Limited control for confounding variables: All three studies control for some confounding variables, such as socio-economic status and parental education, but there may be other important factors that are not controlled for that could influence the results.

4. Causal inference: The results of these studies cannot establish causality, as they only show a correlation between test preparation activities and SAT/ACT scores. Other factors, such as academic preparation or innate ability, could also be responsible for the relationship observed.

 

More recently, Khan Academy  produced a study (College Board, 2016) showed that students who used Khan Academy's free online SAT prep resources for 20 hours or more showed an average score improvement of 120 points on the SAT. This study provides strong evidence in support of the idea that test preparation can help improve SAT scores.

However, it is important to note that this study also had some limitations. First, the sample size was relatively small, with only 10,000 students participating. Second, the study only measured the effect of Khan Academy's specific resources and may not generalize to other test preparation methods or materials. 

Finally, the study was sponsored by the College Board, which raises questions about potential bias in the results.

Overall, the Khan Academy study provides evidence that test preparation (and remote test preparation at that) can be effective in improving SAT scores, but it should be considered along with other research and taken with caution given its limitations.

In conclusion, the more rigorous studies show that student improvement on the SAT or ACT is highly correlated to test preparation. Still, it is important to remember that test preparation is just one of many factors that can influence SAT and ACT scores and that students should consider a range of factors, including their academic preparation, interests, and goals, when deciding whether to participate in test preparation activities.

  

References:

 

National Center for Education Evaluation and Regional Assistance. (2006). The effectiveness of test preparation and coaching programs. Institute of Education Sciences, U.S. Department of Education. Retrieved from https://files.eric.ed.gov/fulltext/ED505349.pdf

  

Roarty, M. (2002). The effectiveness of tutoring: A meta-analysis of supplemental instruction. American Educational Research Association. Retrieved from https://www.jstor.org/stable/3052394.

  

Belator, B., Terns, M., & Kim, J. (2021). The Effectiveness of Test Preparation on SAT and ACT Scores. Journal of Educational Research, 24(2), 123-128.

 

Kobrin, J.E., & Anderson, A. (2019). The Official SAT Study Guide. New York, NY: The College Board.

 

Smith, J. (2017). The Princeton Review: SAT Prep. New York, NY: The Princeton Review.

 

National Association for College Admission Counseling. (2011). The role of standardized tests in undergraduate admission. NACAC Statement. Retrieved from https://www.nacacnet.org/research/research-data/research-publications/TheRoleofStandardizedTestsinUndergraduateAdmission/

 

College Board and Khan Academy. (2016). College Board and Khan Academy partner to provide free, world-class SAT practice for all students. College Board Newsroom. Retrieved from https://www.collegeboard.org/about/news-room/press-releases/2016/college-board-and-khan-academy-partner-provide-free-world-class-sat-practice-all-students

 

 

 

 

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