The scrapping of compulsory modern languages in England's secondary schools was a consequence of truancy crackdowns, the BBC has learnt.
Former education secretary Estelle Morris, who took the decision in 2002, says the aim was a flexible curriculum for teenagers brought back into school.
Compulsory languages for these returned truants did not seem "appropriate".
The number of pupils taking French GCSE has dropped 30% since it ceased to be compulsory for the over-14s in 2004.
The weakness of language learning in England has been a recurrent concern - with repeated warnings that the country lags behind international competitors.
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