An educator has obtained class average scores on a standardized test for classes from each grade from first through seventh at each of four schools in a city. These are shown in the following table. To assess differences among schools, the educator decides to conduct a randomized-blocks ANOVA, treating grade as a blocking factor.

a. Conduct the appropriate analysis, using the accompanying computer output.
b. Provide F tests about school and grade differences, using α = .05. What do you conclude?
c. Why might using the children's individual scores be better than using mean scores?
Dependent Variable: SCORE