---
title: "Get a learner performance broken down by track"
method: GET
path: "/api/v1/detailed-user-activity/performance-by-track"
tags: ["dashboard", "bff"]
---

# Get a learner performance broken down by track

`GET /api/v1/detailed-user-activity/performance-by-track`

## Query parameters

- `page` number
- `limit` number
- `language` 'en' | 'de' | 'fr' | 'es' | 'it' | 'nl' | 'zh-Hans'
- `createdAfter` string, date-time
- `createdBefore` string, date-time
- `userId` string, uuid, required
- `trackIds` string[]

## Response `201`

- DetailedUserActivityGetPerformanceByTrackResponseDTO
  - `data` object[], required
    - `averageScore` number, nullable, required — The learner's mean of the latest DONE scored session per mission (any scored session, including sub-70 / not completed). Null when the learner has no scored session (never 0).
    - `completedMissionCount` number, required — Number of missions in the track the learner has completed (score >= 70). The "X" in "X of Y missions".
    - `improvementDelta` number, nullable, required — Mean of (best − first session) across the track's missions for the learner. Only missions with >= 2 scored sessions contribute, so this can be null even when attempts exist (e.g. every mission has a single scored session).
    - `totalMissionCount` number, required — Number of missions in the track (the "Y" in "X of Y").
    - `trackId` string, required — Unique identifier for the track
    - `trackName` string, required — Name of the track
  - `meta` object, required
    - `hasNext` boolean, required
    - `limit` number, required
    - `page` number, required
    - `total` number, required

---

[API](https://skmtc.net/wejam/apis/jam.md) · [All operations](https://skmtc.net/wejam/apis/jam/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/wejam/jam/revisions/bd5a5f406bca/schema)