Penny Mordaunt launched into a furious rant against the SNP this morning in the House of Commons, accusing them of having "wrecked the education system".
She accused the SNP of conducting "horrific" behaviour towards its own elected representatives and "bile fuelled rants".
The Leader of the House of Commons claimed the party has an "appalling legacy".
Mordaunt was responding to a question from SNP Dierdre Brock, who accused the Conservative party of "squandering billions".
The Leader of the House of Commons claimed the party has an "appalling legacy"
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Brock said: "People ask us why we want to see Scotland independent and away from this bedlam of a Government.
"Now, I realize are waiting in vain for any actual answers to these questions. Questions like, how is it exactly a Government can find fiscal headroom in their budget, when some of my constituents in Edinburgh North and Leith can't afford to feed themselves?
"But isn't that time her profligate government stopped fighting everybody and held an inquiry into itself and the many billions squandered over the last four years."
Responding, Mordaunt said: "Which party is it whose leader smirked while people booed the National Anthem?
"Whose party is it who's activist called BBC reporters traitors? Whose party is it that bullied Conservative Party members attending a conference in in Scotland, to the extent that it made national news?
"Whose party is it whose behaviour was so horrific towards its own elected representatives that they said they suffered panic attacks and some of them cross the floor?
"And who is it that is responsible for the bile-fueled rants that are so evident in Hansard?"
She added: "Once the honourable lady has clocked that all these things are her party, she might reflect on why that is the case.
"And the appalling legacy that such a warped, irresponsible displacement activity has ceded to a generation of Scottish children.
"A wrecked education system, a widening attainment gap, fewer teachers, maths scores declining in every PISA survey, science at a low record and plummeting literacy rates.
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Mordaunt accused the SNP of conducting "horrific" behaviour towards its own elected representatives and "bile fuelled rants"
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"But they will have of course somewhere safe and warm in which to take heroin.
"I'm not going to take any lectures from the honourable lady about values, responsibility, or performance in office.
"This is why I will get up every week, and stand up and fight against the slopey shouldered separatism, evidenced by the SNP."