HARRISBURG, Pa. (AP) – Pennsylvania schools are working on how they will safely transport students this fall, but one idea that won’t be part of the plan is to install plastic barriers around school bus drivers. The state Transportation Department rejected that idea recently, saying there wasn’t evidence it’ll make anyone safer. But a bus trade group spokesperson says the idea was to protect drivers, many of whom are older people at risk of serious illness. The challenge of getting students to school without putting them at heightened risk of COVID-19 infection could involve staggered schedules, limited ridership and health checks.