Table 5.
Summary of mean pre- and posttest scores for individual coursesa
| Average normalized | Probability of | |||||
|---|---|---|---|---|---|---|
| Pretest | Posttest | Test statistic | learning change | superiority | ||
| Course (term) | n | mean % ± SE | mean % ± SE | (significance) | (c‐average) % ± SE | (PSdep)b |
| General (T1) | 170 | 47.5 ± 1.3 | 50.2 ± 1.3 | W = 12984.5 (p = 0.1033) | 4.1 ± 2.4 | 0.5 [n = 85] |
| General (T2) | 160 | 50.1 ± 1.3 | 56.0 ± 1.4 | W = 20197 (p = 0.0015*) | 11.9 ± 2.7 | 0.54 [n = 87] |
| Coordinated (T2) | 110 | 53.8 ± 1.6 | 65.6 ± 1.4 | W = 3568 (p ≤ 0.0001*) | 23.8 ± 2.7 | 0.70 [n = 77] |
| Science (T1) | 57 | 59.6 ± 1.9 | 62.7 ± 1.6 | W = 1382.5 (p = 0.1631) | 10.0 ± 3.3 | 0.53 [n = 30] |
| Biology 3 (T1) | 83 | 45.4 ± 1.8 | 52.2 ± 1.9 | W = 2659.5 (p = 0.0130*) | 10.8 ± 3.1 | 0.59 [n = 49] |
| All (T1 and T2) | 580 | 50.3 ± 0.7 | 56.2 ± 0.7 | W = 2873 (p = 0.0062*) | 11.5 ± 1.2 | 0.56 [n = 327] |
*Posttest scores were significantly higher than pretest scores (W: Wilcoxon sum-rank tests).
aT1: Fall term (September–December 2012); T2: Winter term (January–April 2013). Also shown are average normalized learning changes and probability of superiority (Psdep) effect size values.
b[n = ] represents the number of students whose posttest BEDCI score was greater than their pretest score.