Appendices TableB.3: School-level representativeness of the estimation sample compared to the full population sample. Estimation sample Full population Obs. Mean (SD) Obs. Mean (SD) Number of schools in the board 1,248 21.55 (12.75) 6,396 12.22 (12.70) School size 1,248 237.44 (141.66) 6,396 219.67 (138.25) Percentage of disadvantaged students 1,248 17.46 (16.46) 6,130 15.67 (15.52) Note. The full population sample refers to all schools in school year 2020-2021. The estimation sample consists of all schools of the students in the estimation sample in sixth grade. 202
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