In a speech he is due to give in London, Wilshaw believes lessons should not be undermined by "background chatter, inattention and horseplay".
As part of his annual Ofsted report, Sir Michael will warn that there are "stark inequities" across England, with a child's chances of being taught at a good school far too dependent on where they live.
He will add that the "battle against mediocrity" is gradually being won, but that England is still a nation divided into "lucky and unlucky children".
Deborah Lawson, the General Secretary of Voice: the union for education professionals, reacts to Sir Michael Wilshaw's Ofsted report.
The percentage of pupils at good or outstanding secondary schools is highest in Bath and North East Somerset.
The percentage of pupils at good or outstanding primary schools is highest in Darlington, according to new Ofsted figures published today.