Bixby Public Schools Implementing Changes To COVID-19 Precautions For Pre-K Through 6th Grade Bixby Public Schools is making changes to its COVID-19 precautions now that there are fewer cases. Starting Monday, Pre-K to sixth Grade teachers can decide whether to require masks in their own classrooms. Masks will still be required for students and teachers in all other grades. Also, younger students will still need to wear masks in public areas and on school busses.