question: Compared to control what was the result of Physical Activity Across the Curriculum (PAAC) on levels of physical activity in the classroom?
context: Students in the intervention schools performed significantly greater levels of physical activity in the classroom than students in the control schools; higher scores indicate higher activity intensity levels (intervention students 3.40 ± 0.02 vs control students 2.17 ± 0.03, p < 0.0001).