Extract data from the Education_Data_Sample.csv dataset, grouped by grade (Grade 9/Grade 10/Grade 11), course type (Core Courses/Elective Courses), and attendance days (High: ≥20 days/Medium: 10-19 days/Low: <10 days); include 3 metrics: average exam score, attendance rate, and number of students per group; ensure no duplicate records (based on Student ID) and complete data. Organize the data into an Excel document with both text and visuals, and the charts in the Excel must use the Starbucks color scheme.