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The impact of pre-school on young children's cognitive attainments at entry to reception.

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Early years

How did the length of time that children spent attending pre-school affect their attainment?

Once they had unpicked the effect of other factors on early learning, the researchers turned their attention to the specific effects of preschool experience. They excluded the effects of other factors and compared the duration of pre-school experience with assessment scores at school entry. 'Duration' was measured from a child's date of entry to one of the pre-school centres in the study. 

The researchers used the following categories:

  • no pre-school experience (home children);
  • up to one years experience of pre-school;
  • 1-2 years pre-school experience;
  • 2-3 years pre-school experience; and
  • more than 3 years pre-school experience.

The results showed that children who had spent more time in pre-school attained significantly higher scores in pre-reading, early number and language than those who had spent all their time at home. For these measure in general, the longer a child attended one of the pre-school centres in the study, the stronger the positive impact on attainment. The researchers found one anomaly: in language attainment, children who had experienced only one year of pre-school actually did a little better than groups with 1-2 or 2-3 years of pre-school experience. The more typical pattern was shown by children with more than three years of pre-school experience, who did markedly better in tests of language than all the others.