Predicting academic achievement and student absences in high school: The roles of student and school attributes.

Schools with large numbers of classes and with large student-to-teacher ratios were linked to students emitting more absences ( b Classes = 0.196, p < 0.05; b RatioST = 0.151, p < 0.05); although the number of classes could potentially present a proxy for school size, the respective effect of having large numbers of students failed to reach significance ( b = 0.001, p = 0 .391).

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Figure 2 displays international estimates from the Unesco Institute for Statistics showing a negative trend over time in that ratios improve with time.

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