A new law will help all pupils in Wales become confident Welsh speakers by 2050, the Welsh government has said.
Proposals for a new Welsh Medium Education Bill have been published by Labour ministers and Plaid Cymru.
Plaid Cymru said it set the foundation for every pupil to have Welsh-medium education.
But campaigners have warned of a "danger that the targets are too low, the aim too vague, and the actions insufficient".
Proposals include reflecting the target of one million Welsh speakers by 2050 in law as well as giving legal status to the language categories for schools.
The aim is to increase Welsh language provision within English-medium schools and also to increase the number of schools in the Welsh-medium category.
