BASE for ages 4-5

(Pre-school, Kindergarten, Reception baseline assessment)

Support early learning and development

Find out more Buy BASE

Quick Look

Age: 4-5 years old

Assessment: Adaptive, Baseline, Curriculum independent, Digital

Sections: Literacy, Numeracy, Communication & Language, and Personal Social and Emotional Development

Avg Duration: 20 minutes

Price: View current costs

Assessments to empower schools

What started off as a personal small-scale research project in 1982 has developed into a whole series of assessments for schools across the world. We help you to uncover students’ baseline abilities, understand their capabilities and unlock their full potential. CEM assessments are used by education professionals in over 90 countries, and over 360,000 students will be taking a CEM assessment this academic year.

What is BASE?

BASE is a reception baseline assessment designed to give you a snapshot of where your children are at as soon as they start school at age 4 or 5.

Developed to complement your own observations of early learning, BASE provides objective and independent information that helps you to understand what children know and can do when they join you, and the progress they make during this crucial stage of development.

As well as supporting the Early Years Foundation Stage profile, our BASE Progress and BASE Inspection Ready packages allow you to monitor your children's progress over the year and ease the transition into Year 1.

More than just a test



Fun and engaging storybook-style approach designed to give children valuable one-to-one time with their teacher. Flexible teacher-led assessment that can be stopped or started at any time.



Results are available to download within 48 hours, providing powerful insights to act upon. Quickly identify individual needs in ‘hard to observe’ ability areas. Compare development with children of a similar age.



Use the feedback reports to plan activities and support and align resources to particular needs right from the start.



Target resources effectively. Support observations and professional judgement with reliable data.



Monitor the progress of each child and cohort with an end of year follow-up assessment. Benchmark your school performance against averages and a comparison. Understand trends in cohorts over time.



Access support and guidance from your personal secure site.

"Having high quality data and information from assessment increases our knowledge of each child quickly and puts them at the heart of their learning."

Lydia Cuddy-Gibbs, Head of Early Years, Ark Schools


Choose from three subscription options:

Reports vary, depending on which option you choose. *Other reports may be available for you to try out with up to five pupils.

BASEline* – start of year assessment only.

BASE Progress* – start of year and end of year follow-up assessment.

BASE Inspection Ready – start of year and end of year assessments with a full suite of reports.

Why use Early Years and Reception baseline assessments?

We know there are a lot of strong opinions about putting children through formal testing at such a young age. We agree. Testing for the sake of record keeping at this age makes no sense and adds no value to learning. However, assessment with purpose can make all the difference. Browse our collection of blogs and webinars to find out more about the impact a good reception baseline assessment can have on a pupil’s learning.



Ready to get started with BASE?

If you are a new customer, create a CEM Secure account to subscribe for your BASE assessment.

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If you are an existing Primary customer with access to CEM Secure, please use the online subscription process on the CEM Secure site.