Refuge said it is worried too many young people are not being taught how to spot the signs of domestic abuse and controlling or coercive behaviour.
Less than half of older teenagers have received education on domestic abuse and controlling or coercive behaviour at their sixth form or further education college in England, research suggests.
Charity Refuge said 47% of 16 to 19-year-olds had received this education at sixth form or at their further education college, with 50% saying they had received this while in school years seven to 11.