The document discusses whether vaccines can lead to mental impairments such as autism. It notes that while some vaccines have been accused of causing autism, there are strict testing and monitoring procedures vaccines must go through before approval. These include FDA approval, computer simulations, animal testing, and clinical trials. Once approved, vaccine adverse events are tracked through programs like VAERS and VSD. The document concludes that while students may be susceptible to vaccine side effects when first entering school, there are no proven studies connecting vaccines to mental impairments.