# ScoreString

> **Class** in `langchain_classic`

📖 [View in docs](https://reference.langchain.com/python/langchain-classic/smith/evaluation/config/RunEvalConfig/ScoreString)

Configuration for a score string evaluator.

This is like the criteria evaluator but it is configured by
default to return a score on the scale from 1-10.

It is recommended to normalize these scores
by setting `normalize_by` to 10.

## Signature

```python
ScoreString()
```

## Extends

- `SingleKeyEvalConfig`

## Properties

- `evaluator_type`
- `criteria`
- `llm`
- `normalize_by`
- `prompt`

---

[View source on GitHub](https://github.com/langchain-ai/langchain/blob/185119f98e6286253a2326d7cf4f59592678023d/libs/langchain/langchain_classic/smith/evaluation/config.py#L247)