Massac Unit 1 has corrected the link to the voluntary student accident insurance application page. You can access the link and other information here: https://www.massac.org/page/student-accident-insurance
Unless you have your own health insurance, this is the only policy that covers student accidents during school hours or at school extra curricular events. Even if you have your own insurance, this voluntary policy will help fill deductible gaps and possibly other services that are not covered. The policy brochure is linked here. More details about the policy benefits can be found here.