Write a detailed grading rubric in a {{tone}} tone for {{target_audience}} evaluating {{assignment_type}} submissions. The rubric must include {{criteria_count}} criteria, each with 4 performance levels: Exemplary, Proficient, Developing, Beginning. Each criterion has a clear name and description. Each level has specific, observable descriptors. Structure for easy use by instructors and students. Use constructive language focused on growth. Present as a table with columns: Criterion, Exemplary, Proficient, Developing, Beginning. Include a brief introduction. Maximum 800 words. Paste any relevant background information after these instructions before running.