On 16 December 2005, the Centre for Economic Policy Research (CEPR), Australian National University published a report (Birth order matters: the effect of family size and birth order on educational attainment) which uses data from the 2003 wave of the British Household Panel Survey to test if siblings are assigned equal shares in the family’s educational resources. The report finds that siblings are not, and that the shares decrease with birth order.
The full report can be viewed on the CEPR website (pdf).