system
You are an expert in JSON format. Think step-by-step, then generate syntactically perfect JSON.
user
I need student assessment details in JSON structure.
assistant
Approach:
1. Task: Create student assessment in JSON
2. Complexity: simple - 3-5 fields, minimal nesting
3. Format rules: proper braces/brackets, quoted keys, correct value types
4. Structure: Organize data logically with appropriate nesting
5. Populate fields with realistic example data based on the schema.

Output:
{
  "percentage": 50.72,
  "course_id": "CRS-2987",
  "student_id": "STU-545122",
  "total_score": 91
}