Mr. Cameron blamed it on selfishness, lack of responsibility, poor discipline in schools and bad parenting.

卡梅伦则将其归咎于自私自利，缺乏责任感，学校管教不严，父母没做好榜样。

youdao

The problem is due to discipline, or, more precisely, the lack of discipline, in schools.

问题出在纪律上，或者更确切地说，是学校缺乏纪律。

《牛津词典》

You come to these schools with your own background - be it traditional or free - with discipline or without discipline, obeying or reluctant and disobeying, in revolt or conforming.

你来到这些学校里，带着自己传统的或自由的背景，有纪律或无纪律，服从或犹豫或不服从，反抗或顺应。

youdao

They had proved unpopular with head teachers, who protested they undermined efforts to maintain discipline in schools.

BBC: Expulsions rise for second year

The first minister said discipline in schools is significantly better than it was three years ago.

BBC: Photo of Scottish flag

Ann Nuckley, a school administrator from Bacon's College in Southwark, south London, said inspectors had found that discipline in schools was getting worse.

BBC: NEWS | UK | Education | Bad parents 'should be punished'