curl -X GET https://api.chessplay.io/api/v1/classrooms/1/ \
  -H "Authorization: Bearer YOUR_ACCESS_TOKEN"

{
  "id": 1,
  "name": "Beginner Chess",
  "description": "Introduction to chess",
  "coach": {...},
  "students": [...],
  "start_time": "2024-01-20T10:00:00Z",
  "end_time": "2024-01-20T11:00:00Z",
  "created": "2024-01-15T10:30:00Z"
}