Washington ? Schoolchildren could be first in line for swine flu vaccine this fall — and schools are being put on notice that they might even be turned into shot clinics.

Health and Human Services Secretary Kathleen Sebelius said Tuesday she is urging school superintendents around the country to spend the summer preparing for that possibility, if the government goes ahead with mass vaccinations.

“If you think about vaccinating kids, schools are the logical place,” Sebelius told The Associated Press.

No decision has been made yet on whether and how to vaccinate millions of Americans against the new flu strain that the World Health Organization last week formally dubbed a pandemic, meaning it now is circulating the globe unchecked.