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Average quiz scores: Means and Standard Deviations.
| Reading level | Control (Math) | Combined (BB/EP) | Big Book | Phonics | |
|---|---|---|---|---|---|
| Lower | M | 1.39 | 2.51 | 1.40 | 2.16 |
| SD | 0.72 | 0.45 | 0.45 | 1.87 | |
| Middle | M | 1.79 | 2.64 | 2.21 | 1.84 |
| SD | 0.70 | 0.78 | 0.66 | 0.81 | |
| Higher | M | 2.26 | 2.79 | 2.35 | 2.48 |
| SD | 1.20 | 1.37 | 0.93 | 0.82 | |
| Across levels | M | 1.81 | 2.65 | 1.99 | 2.16 |
| SD | 1.20 | 1.37 | 0.93 | 0.82 |
