Table 3: Unconditional Within-Class HLM Results.
Fixed Effect Coefficient SE p Effect Size
Adjusted mean posttest score γ00 97.02 0.54 < 0.001 -----
Mean pretest slope γ10 0.18 0.02 < 0.001 0.02
Mean age slope γ20 -0.47 0.28 0.09 -0.04
Mean gender slope γ30 7.15 3.44 0.04 0.66
Mean Whites vs. Blacks slope γ40 -2.08 0.77 0.01 -0.19
Mean Whites vs. Hispanics slope γ50 -1.33 0.65 0.04 -0.12
Mean Whites vs. Others slope γ60 -0.04 0.67 0.96 -0.003
Mean age-gender interaction slope γ70 -0.52 0.22 0.02 -0.05
Random Effect γ80 SD Veriance p
Level-2 Error Term
Adjusted classroom mean u0j 5.78 33.46 < 0.001
Pretest score effect u1j 0.21 0.04 < 0.001
Level-1 error term rij 9.78 95.60