Mean of means, pre–post change, and difference-in-differences by STEM discipline
| Subject area | M (Pre-AG) | M (Post-AG) | ΔM (AG) | M (Pre-BG) | M (Post-BG) | ΔM (BG) | ΔΔM |
|---|---|---|---|---|---|---|---|
| Science | 3.88 | 4.75 | 0.87 | 3.69 | 4.62 | 0.93 | −0.06 |
| Technology | 3.00 | 4.25 | 1.25 | 3.72 | 4.39 | 0.67 | 0.58 |
| Engineering | 2.90 | 4.45 | 1.55 | 3.39 | 4.30 | 0.91 | 0.64 |
| Math | 4.15 | 4.65 | 0.50 | 4.01 | 4.72 | 0.71 | −0.21 |
| Grand Mean | 3.48 | 4.53 | 1.05 | 3.70 | 4.51 | 0.81 | 0.24 |
| Subject area | M (Pre-AG) | M (Post-AG) | ΔM (AG) | M (Pre-BG) | M (Post-BG) | ΔM (BG) | ΔΔM |
|---|---|---|---|---|---|---|---|
| Science | 3.88 | 4.75 | 0.87 | 3.69 | 4.62 | 0.93 | −0.06 |
| Technology | 3.00 | 4.25 | 1.25 | 3.72 | 4.39 | 0.67 | 0.58 |
| Engineering | 2.90 | 4.45 | 1.55 | 3.39 | 4.30 | 0.91 | 0.64 |
| Math | 4.15 | 4.65 | 0.50 | 4.01 | 4.72 | 0.71 | −0.21 |
| Grand Mean | 3.48 | 4.53 | 1.05 | 3.70 | 4.51 | 0.81 | 0.24 |
Note(s): AG = group of teachers with coaches; BG = group of teachers without coaches; M = mean of means; ΔM = post-test minus pre-test mean; ΔΔM = difference-in-differences (ΔM A Group of teachers (those with coaches) − ΔM B Group of teachers (those without coaches)
Sharing content requires targeting cookies to be enabled. Please update your cookie preferences to use this feature.