Brothers Kyle and James Smith from the Vale of Glamorgan were both travelling in the same car which crashed in 2005.
Kyle was 16, not wearing a seatbelt, thrown from the vehicle and died.
James was 15, wearing a seatbelt and survived.
Their mother Angie Smith says she has "no doubt" that she would have lost both boys, had James not been wearing a seatbelt.
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A major review will be published later this morning into student finance and higher education in Wales.
Dull and damp for much of Wales as we start the day, with drier and brighter weather on the way this afternoon.
The heaviest of the rain will ease overnight. Remaining mild but breezy around coastal areas.