Two aspects of the same issue: vehicular traffic in the area moves to quickly to properly yield to pedestrians.
Better signage (flashing lights, etc.) is needed to help ensure the school zone speed limit is respected. The crossing guard fights a losing battle every day on that stretch of road. In afternoons, the Howard school bus driver who drops off students at this intersection (after the crossing guard is gone) also struggles to ensure cars stop, frantically honking to try to get drivers' attention. Every day I've seen it, students are almost hit as they cross the road after school. Flashers (as seen further down Market) would be a significant improvement.