A study published in JAMA Pediatrics examines the sustained effects of a preschool home visiting programme on child outcomes in third grade (Year 4). Karen Bierman and colleagues conducted a randomised controlled trial of the Research-Based and Developmentally Informed Parent home visiting program (REDI-P) on 200 families with preschool children recruited from 24 Head Start centres in Pennsylvania.
Families were assigned to either receive the REDI-P intervention or be sent maths learning games in the post (control group). The intervention focused on improving academic performance and social-emotional adjustment, and reducing children’s problems at home. Families received ten visits from home visitors during preschool and six follow-up visits in kindergarten. Parents received coaching to enhance parent–child relationships and home learning materials to support children’s development and school readiness.
Overall, REDI-P produced sustained benefits four years after the intervention, with children in the REDI-P intervention group needing and using fewer school services than children in the control group. Results showed improvements in academic performance in third grade, measured by direct assessments of child sight-word reading fluency (effect size = +0.28) and teacher-rated academic performance in third grade (effect size= +0.29). The intervention also promoted sustained improvements in children’s social-emotional adjustment, reflected in direct assessments of social understanding (effect size = +0.31). REDI-P also produced reductions in the home problems that parents reported (effect size= −0.28).
Source: Effect of Preschool Home Visiting on School Readiness and Need for Services in Elementary School: A Randomized Clinical Trial. JAMA Pediatr. 2018;172(8):e181029.
As part of their Straight Talk on Evidence initiative, the Laura and John Arnold Foundation (LJAF) has released a report that discusses new findings from a randomised controlled trial (RCT) of Tennessee’s voluntary pre-kindergarten programme for low-income children.
The Voluntary Pre-K (VPK) initiative provides Tennessee’s four-year-old children—with an emphasis on four year olds who are at-risk—an opportunity to develop school readiness skills (pre-academic and social skills). The study randomly assigned 3,131 eligible children who applied for admission at one of 79 oversubscribed VPK programmes across the state to either a programme group that was offered admission or a control group that was not (but could access other available child and family services in the community). Pupil achievement and other outcomes were measured in third grade (Year 4) using state educational records.
According to the LJAF report, the study found positive short-term effects on achievement (at the end of the pre-k year), but these effects dissipated as children entered elementary (primary) school and turned modestly negative by third grade (Year 4). At the third-grade follow-up, the control group scored significantly higher in maths and science achievement than the pre-k group.
The report offers possible reasons for the adverse effects, and suggests that the programme be reformed by incorporating evidence-based funding criteria aimed at improving its effectiveness over time.
Source: Large randomized trial finds state pre-k program has adverse effects on academic achievement. Reform is needed to increase effectiveness. Straight Talk on Evidence, The Laura and John Arnold Foundation
Adding a self-regulation intervention to a school readiness programme can improve self-regulation, early academic skills and school readiness in children at higher risk for later school difficulties, according to the results of a study published in Early Childhood Research Quarterly.
Robert J Duncan and colleagues looked at the effect of adding a self-regulation intervention to the Bridge to Kindergarten (B2K) programme – a three-week summer school-readiness programme – in the US state of Oregon. The B2K programme is aimed at children with no prior preschool experience, and therefore considered to be at risk for later school difficulties.
Children from three to five years old were randomly assigned to either a control group (B2K only) or the intervention group (B2K plus intervention). Children in the intervention group received two 20- to 30-minute sessions per week, involving movement and music-based games that encouraged them to practise self-regulation skills.
Results from this randomised controlled trial indicated that children who received the intervention scored higher on measures of self-regulation than children who participated in the B2K programme alone. There were no significant effects on maths or literacy at the end of the programme. However, four months into kindergarten, children from the intervention group showed increased growth in self-regulation, maths and literacy compared to expected development.
Source: Combining a kindergarten readiness summer program with a self-regulation intervention improves school readiness (November 2017) Early Childhood Research Quarterly, Volume 42, 1st Quarter 2018
A systematic review published by the Campbell Collaboration summarises the research on the correlation between reading-related preschool predictors, such as code-related skills and linguistic comprehension, and later reading comprehension skills.
Sixty-four longitudinal studies met the eligibility criteria for the review. These studies spanned 1986 to 2016 and were mostly carried out in the US, Europe and Australia. Overall, the findings of the review found that code-related skills (rhyme awareness, phoneme awareness, letter knowledge and rapid automatised naming) are most important for reading comprehension in beginning readers, but linguistic comprehension (grammar and vocabulary) gradually takes over as children become older. All predictors, except for non-word repetition, were moderately to strongly correlated with later reading comprehension. Non-word repetition had only a weak to moderate correlation to later reading comprehension ability.
These results suggest a need for a broad focus on language skills in preschool-age children in order to establish a strong foundation for reading comprehension.
Source: Preschool predictors of later reading comprehension ability: a systematic review (December 2017), A Campbell Systematic Review 2017:4, Campbell Collaboration
A longitudinal study published in Frontiers in Psychology examined how children in Montessori schools changed over three years compared with children in other pre-school settings.
The Montessori model involves both child-directed, freely-chosen activity and academic content. Angeline Lillard and colleagues compared educational outcomes for children allocated places by a random lottery to either Montessori pre-schools (n=70) or non-Montessori pre-school settings (n=71) in Connecticut, US. The research team carried out a variety of assessments with the children over a three-year period, from when the children were three until they were six.
The researchers found that over time children in Montessori pre-schools performed better on measures of academic achievement (Woodcock–Johnson IIIR Tests of Achievement effect size = +0.41) and social understanding, while enjoying their school work more, than those in conventional pre-school settings. They also found that in Montessori classrooms, children from low-income families, who typically don’t perform as well in school, showed similar academic performance as children from higher-income families. Children with low executive function similarly performed as well as those with high executive function.
The findings, they suggest, indicate that well-implemented Montessori education could be a way to help disadvantaged children to achieve their academic potential.
Source: Montessori Preschool Elevates and Equalizes Child Outcomes: A Longitudinal Study (October 2017), Frontiers in Psychology
The evidence of the effects of state-funded pre-kindergarten (preschool) programmes in the US was recently reviewed by a task force of scientists from the Brookings Institute and Duke University. These findings were released in a report called “The Current State of Scientific Knowledge on Pre-Kindergarten Effects”. Following the evidence review, the task force released a consensus statement outlining conclusions and recommendations about the effects of state-funded pre-kindergarten. According to the report:
- Greatest improvements at the end of the pre-kindergarten year are more often found for pupils from low-SES backgrounds or who are dual language learners than for their higher-SES and English-proficient peers.
- Not all pre-k programmes are equally effective, and this may be influenced by several factors. Positive influences include using evidence-based programmes that are well-implemented; utilising ongoing professional development and coaching for teachers; and promoting classrooms with predictable routines and positive, supportive pupil-teacher relationships.
- Pre-k environments are most effective when pupils’ individual abilities, knowledge and backgrounds are considered, and teaching strategies and content accordingly adjusted.
- Children who attend pre-k demonstrate more school readiness at the end of the year than those who do not, especially in the areas of literacy and numeracy.
- Long-term effects of pre-k in the later elementary (primary)years are inconclusive.
- More complete and reliable evidence is needed, during and after pre-k programmes, to create and sustain pre-kindergartners’ long-term gains.
The full report goes into more detail about the consensus statements, and discusses the results of the evidence with regards to funding, policy and other considerations.
Source: Puzzling it out: The current state of scientific knowledge on pre-kindergarten effects: A consensus statement (April 2017), Duke Center for Child and Family Policy, The Brookings Institution