Bloc MP Carole Lavallée looks at one of the letters that she calls propaganda from the prime minister's office. (CBC)

The Bloc Québécois MP who accused the prime minister of sending propaganda to high school students says Stephen Harper is taking the opportunity to indulge in "Bloc bashing."

Carole Lavallée, MP for the Saint-Bruno-Saint Hubert riding on Montreal's South Shore, was responding to Harper's comments about her accusations.

Lavallée is upset that Harper's office sent letters to Grade 8 students across the country, inviting them to visit Canada's national parks for free for an entire year.

Lavallée said some Quebec parents have complained to her, particularly about a sentence in the French version of the letter that reads: "Ce grand pays qui est le nôtre," which can be translated as "This big country of ours."

"This big country is not ours, we don't feel so," said Lavallée.

Speaking in Kitchener, Ont., on Thursday, Harper said he wasn't surprised to see the Bloc's reaction, since "it's the habit of the Bloc Québécois to see anything as a federalist plot."

Harper said the letters were sent out to encourage students to visit what he calls "a tremendous national treasure."

Lavallée was unimpressed by Harper's remarks.

"He's profiting from this issue and [exaggerating]," said Lavallée on Thursday. "It's another way for him to bash the Bloc Québécois...again," Lavallée added.

The Bloc MP also said that she never used the word "plot," but maintained that education falls under the provinces' responsibilities and if Harper wanted to offer the free passes, he should have contacted the Quebec government.

Lavallée said she hopes there will be no more letters sent from the prime minister's office.