Student Performance Tracking Dashboard with Dynamic SQL Pivot

Design a comprehensive Google Sheets dashboard that pulls student performance data from a PostgreSQL database using complex pivot table techniques. Create a script that dynamically updates grade distributions, calculates weighted averages across multiple semesters, and generates color-coded performance heatmaps. Implement row-level security to ensure only authorized administrators can view full student details. Include conditional formatting that automatically highlights at-risk students based on GPA thresholds and attendance records.