ISLAMABAD, Pakistan — A network of private schools on Monday unleashed a scathing public attack on Malala Yousafzai, the teenage Nobel laureate, in the most concerted assault yet on her reputation in her home country.

The All Pakistan Private Schools Federation, which claims to represent 150,000 schools across Pakistan, declared that Monday would be “I am not Malala” day and urged the government to ban her memoir, “I Am Malala,” because it offended Islam and the “ideology of Pakistan.”

“We are all for education and women’s empowerment,” said Mirza Kashif Ali, the organization’s president. “But the West has created this persona who is against the Constitution and Islamic ideology of Pakistan.”