As part of our commitment to provide schools with data and reporting that help inform and improve teaching and learning, we are pleased to announce that CAT4 is now available as a digital test for students in Year 2/Grade 1.

CAT4 X tests are now available to complete on PC and tablet. Please review our minimum system requirements for more details.

Benefits:

- Schools can now benefit from the extensive CAT4 data supporting teaching and learning for students in Year 2/Grade 1
- Gain insight into the abilities of your young learners
- Instant reporting available (see below)

**Overview of testing levels**

CAT4 Level |
Grade |
Year |

X |
1 |
2 |

Pre-A |
2 |
3 |

A |
3 |
4 |

B |
4 |
5 |

C |
5 |
6 |

D |
6 |
7 |

E |
7 |
8 |

F |
8 / 9 |
9 / 10 |

G |
10 / 11 |
11 / 12 |

CAT4 X is a shorter assessment than levels A-G to reflect the age of the students. It is recommended to schedule 1 hour and 30 minutes for testing, this will include settling in time.

The test will be delivered in two parts:

**Part 1**

Figures | 12 minutes | 5 minutes | 32 minutes + settling time |

Words | 10 minutes | 5 minutes |

**Part 2**

Numbers | 10 minutes | 5 minutes | 31 minutes + settling time |

Shapes | 11 minutes | 5 minutes |

Group reports and individual reports for parents, teachers and pupils are available now.

**Understanding the difference between CAT4 Level X & Y standard age score reporting and the other CAT4 levels**

When comparing standard age scores (SAS) between CAT4 Level X & Y and the other levels of CAT4 it is important to note that whereas the range of scores from levels A to G is from 59 to 141 the range of scores for levels X & Y is reduced to 69 to 131.

There is a simple explanation for this difference. CAT4 levels X and Y are designed to test younger students who typically have a shorter attention span than older students. As a result, they are administered in two parts of 30 minutes rather than in three parts of 40 minutes. This change in design allows us to create a test that is appropriate for these younger students but with fewer questions and less data we cannot reliably differentiate* between extremely strong scores above 131 or extremely weak scores below 69. Note that only the bottom 2% and top 2% of children’s results will have standard age scores that are affected by the different limits. Note also that these children will receive the same Stanine and almost all will receive the same National Percentile Rank (NPR).

*Percentage of students in each portion is subject to rounding simplification*

The SAS range that is common to the levels (between 70 and 130) functions the same, and the correspondence between SAS and Stanines, and between SAS and NPR is the same across levels.

*Contextual explanation of statistical reliability……

Students with very high abilities are likely to get all items of an age appropriate difficulty correct, and so in order to differentiate students of very high abilities from each other there needs to be a lot of opportunities for them to demonstrate the *limits* of their abilities. Conversely, students with very low abilities are likely to get all items of an age appropriate difficulty incorrect, and so in order to demonstrate the *limits* of their abilities there needs to be a lot of opportunities. Statisticians would describe this as less 'test information' in a shorter test (keeping all other things the same), and this reduction in test information affects the extreme values of the ability range more than the less extreme values. For more information, see for example Baker, 1985 *The Basics of Item Response Theory *chapter 6 "the Information Function" available here http://echo.edres.org:8080/irt/baker/chapter6.pdf

Yes, students will require headphones as they do for all other CAT4 levels.

Level X can be used in the same way as CAT4 levels A-G. The scale for the standardised age scores are the same, but the range is restricted to 69 – 131.

The data can be used for triangulation with assessments such as NGRT and PT. However, combination reports are not yet available.

*CAT4 levels X and Y are shorter tests *designed to test younger students who typically have a shorter attention span than older students. As a result, the test contains fewer questions. They are administered in two parts of 30 minutes rather than in three parts of 40 minutes.

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