This marks our sixth Legislative Update and fourth focused on vaccinations. Why? Because while advancements in the public’s health would not—and will not—be possible without vaccines, they remain under attack. Schools have been key public health partners in previous efforts to fight vaccine-preventable diseases, such as the elimination of polio beginning in the 1950s. The vaccination of U.S. children born between 1994 and 2021 is estimated to have prevented 472 million illnesses and more than one million deaths, and saved nearly $2.2 trillion in total societal costs.