HOME-STUDY DRIVER EDUCATION
Three of the four ANOVAs comparing the DMV written knowledge test pass rates were statistically significant (ps < .05). Note that all of the percentage-point pass rate differences shown in Table 9 are negative numbers, indicating that students in the home-study courses all performed worse on their first written test attempt than did classroom students. However, not all of these differences were statistically significant. Specifically, results of Tukey post-hoc tests for the comparison including all students, regardless of the correctness of their assignment, indicated that for those students with a valid test score who did not simultaneously enroll in driver training, a higher percentage of students who completed the classroom instruction passed the written test on their first attempt compared to those who completed the CD-ROM course (p < .05). The percentages of students who passed the written test on their first attempt did not significantly differ between classroom and the PEN course, or classroom and the workbook course (ps > .05). However, the results did suggest that the workbook students performed worse than the classroom students on their first DMV written test (p = .07).
Number of Non-Driver Training Students(n) with a Valid First Attempt DMV Written Knowledge Test Score and Percentage of Students Who Passed the Test for Each Driver Education Instruction Method by Statistical Comparison
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Driver education instruction method
% PASSING ON FIRST ATTEMPT
Figure 3. DMV written test pass rate by instruction method and statistical comparison.