# 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`

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[View source on GitHub](https://github.com/langchain-ai/langchain/blob/9f232caa7a8fe1ca042a401942d5d90d54ceb1a6/libs/langchain/langchain_classic/smith/evaluation/config.py#L247)