And if some substantial fraction of them do, how much overall impact does this have on the aggregate test scores of the lottery-losing children?

FORBES: KIPP and the Charter School Lottery

Smith put a disappointing day behind him to pay tribute to Kallis' achievement, joining the likes of Sachin Tendulkar, Brian Lara and Allan Border on a five-figure Test aggregate.

BBC: S Africa recover after North ton

Tendulkar, 35, scored the 15 extra runs he needed to overtake Lara's aggregate of 11, 953 on day one of the second Test against Australia in Mohali.

BBC: Tendulkar breaks Lara Test record

Hutton's aggregate of 1, 521 runs from 19 innings is by far the highest in Oval Test history.

BBC: Classic Ashes: The Oval

Because of the way the aggregate is calculated it is not necessarily exactly the same as the sum of the three test results.

BBC: NEWS | UK | Education | Guide to the primary school tables

To test our hunch that the same applied in nutrition, we looked at the aggregate Eatery scores for all meals eaten in a city versus the published obesity level in that city.

FORBES: We Eat Less Healthy Than We Think [Infographic]