This is an independent opinion. Have one of your own? Email it to hoa@ivn.us Everyone wants schools to resume pre-pandemic operations as soon as possible. But it would be a mistake for the 122,000-student San Diego Unified School District to fully reopen its classrooms and campuses without absolute reliance upon a scientifically informed approach that includes comprehensive testing and strong mitigation factors, such as universal mask wearing and social distancing. The need has never been more...