---
title: "Start Self Study Attempt"
method: POST
path: "/knowledge-quiz/my-courses/{course_id}/start"
tags: ["knowledge-quiz"]
---

# Start Self Study Attempt

`POST /knowledge-quiz/my-courses/{course_id}/start`

Start a new self-study quiz attempt for user's own course.
Generates random variation selections and question order.

## Path parameters

- `course_id` string, required

## Request body

- StartSelfStudyRequest — Optional request body for starting a self-study attempt.
  - `auto_correct_question_ids` string[], nullable

## Response `200`

Successful Response

- SelfStudyAttemptResponse — Response for a self-study quiz attempt (no assignment).
  - `id` string, required
  - `quiz_id` string, required
  - `user_id` string, required
  - `course_id` string, required
  - `status` string, required
  - `score_out_of_20` number, required
  - `correct_count` integer, required
  - `total_questions` integer, required
  - `attempt_number` integer, required
  - `started_at` string, date-time, required
  - `completed_at` string, date-time, nullable
  - `answers` QuizAnswerRecord[]
    - `question_id` string, required
    - `answer_type` 'choice' | 'open'
    - `selected_answer_index` integer, nullable
    - `is_correct` boolean
    - `photo_urls` string[]
    - `grading_status` 'processing' | 'graded' | 'error' | 'rejected', nullable
    - `grading_error` string, nullable
    - `rubric_evaluation` RubricEvaluation — One evaluation pass over a submission against a specific rubric. Multiple may exist per submission attempt (initial AI + teacher overrides); the latest one is canonical.
      - `rubric_id` string, required
      - `author` union, required
        - AIAuthor
          - `type` 'ai'
          - `prompt_id` string, required
          - `model` string, nullable
        - HumanAuthor
          - `type` 'human'
          - `user_id` string, required
      - `feedback` string, required
      - `questions` RubricQuestionEvaluation[], required
        - `skill_outcomes` SkillOutcome[], required
          - `savoir_faire_id` string, required
          - `outcome` 'correct' | 'partial' | 'wrong' | 'unanswered', required
          - `note` string, required
          - `evidence` EvidenceSpan[], required
            - `excerpt` string, required
            - `span` TextSpan, required — Resolved char offsets into a `SubmissionAttempt.solution_blocks[i].transcribed_text`. Backend computes start/end at write time.
              - …
        - `criterion_outcomes` CriterionOutcome[]
          - `criterion_index` integer, required
          - `outcome` 'correct' | 'partial' | 'wrong' | 'unanswered', required
          - `note` string, required
          - `evidence` EvidenceSpan[], required
            - `excerpt` string, required
            - `span` TextSpan, required — Resolved char offsets into a `SubmissionAttempt.solution_blocks[i].transcribed_text`. Backend computes start/end at write time.
              - …
        - `question_outcome` QuestionOutcome — The grader's verdict on one question of a points rubric: where the answer sits on the five-level ladder, plus what the student is told. `unanswered` is not a rung on the ladder — it says there was nothing on the page to grade (on the photo path it also covers "this part of the copy is unreadable", so illegibility is never laundered into a low score). It implies `score == 0`, which `validate_question_evals_match_rubric` enforces. `alternative_method` records that the route read on the copy is not the corrigé's. It is informational — a valid alternative route scores 4 like any other correct answer — but it is the signal that says whether the scheme is doing the job it was built for. `teacher_points_awarded` is the mark a human wrote on this question (EXC-765). It is `None` on every AI-authored outcome, which is the whole back catalogue, and when it is set it is what the question earns — `question_award` is the one place that arbitration happens. A teacher grades in quarter-points against an allocation ("2,5 sur 3"), a shape the 0..4 ladder cannot express, so the figure is stored rather than folded back into a rung. The rung is still kept coherent with it: the override service re-derives `score` through `score_for_award` so the label, the v2 projection and the analytics never contradict the mark on the copy.
          - `score` integer, required
          - `unanswered` boolean
          - `note` string, required
          - `evidence` EvidenceSpan[]
            - `excerpt` string, required
            - `span` TextSpan, required — Resolved char offsets into a `SubmissionAttempt.solution_blocks[i].transcribed_text`. Backend computes start/end at write time.
              - …
          - `alternative_method` boolean
          - `teacher_points_awarded` number, nullable
        - `errors` FlaggedError[], required
          - `description` string, required
          - `evidence` EvidenceSpan[], required
            - `excerpt` string, required
            - `span` TextSpan, required — Resolved char offsets into a `SubmissionAttempt.solution_blocks[i].transcribed_text`. Backend computes start/end at write time.
              - …
          - `categories` ErrorCategory[], nullable
      - `question_zones` QuestionZone[]
        - `question_indexes` integer[], required
        - `boxes` PhotoBBox[], required
          - `photo_index` integer, required
          - `x` number, required
          - `y` number, required
          - `width` number, required
          - `height` number, required
      - `computed_grade` number, required
      - `max_grade` number, required
      - `evaluated_at` string, date-time, required
    - `points_earned` number
    - `points_max` number

## Other responses

- `422` — Validation Error

## Changes

> 19 revisions in range; 1 not diffed.

- **2026-09-22** `05e048df94c6` — 1 breaking, 1 info
  - the response property `answers/items/rubric_evaluation/anyOf[subschema #1: RubricEvaluation]/questions/items/criterion_outcomes` became optional for the status `200`
  - added the optional property `answers/items/rubric_evaluation/anyOf[subschema #1: RubricEvaluation]/questions/items/question_outcome` to the response with the `200` status
- **2026-09-07** `0ccba2913cca` — 1 info
  - added the optional property `answers/items/rubric_evaluation/anyOf[subschema #1: RubricEvaluation]/author/oneOf[subschema #1: AIAuthor]/model` to the response with the `200` status
- **2026-09-03** `ef67479ed898` — 1 info
  - added the optional property `answers/items/rubric_evaluation/anyOf[subschema #1: RubricEvaluation]/questions/items/errors/items/categories` to the response with the `200` status

[Change history](https://skmtc.dev/excellence-ai/apis/excellence-learning/changes/knowledge-quiz/my-courses/:course_id/start/post.md)

---

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