A meta-analysis published in Review of Educational Research summarises findings from studies that evaluated the effects of in-service training for early childhood teachers on the quality of early childhood education and care (ECEC) and child outcomes. Overall, data from 36 studies with 2,891 teachers was included in the analysis. For studies to qualify, child care quality had to be measured externally with certified raters at the classroom level.
The analysis, carried out by Franziska Egert and colleagues, revealed that at the teacher level, in-service training had a positive effect on the quality of ECEC, with an effect size of +0.68. Furthermore, a subset of nine studies (including 486 teachers and 4,504 children) that provided data on both quality ratings and child development were analysed, and they showed a small effect at the child level (effect size = + 0.14) and a medium effect at the corresponding classroom level (effect size = +0.45).
Source: Impact of In-Service Professional Development Programs for Early Childhood Teachers on Quality Ratings and Child Outcomes: A Meta-Analysis, Review of Educational Research, 88:3 401 – 433.
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
Franziska Egert and colleagues in Germany and Amsterdam have conducted a review of the effects of professional development (PD) for early childhood educators on programme quality and children’s educational outcomes.
Studies were only included if they addressed quality of child care or child development, included early childhood teachers (including preschool, kindergarten and centre-based care), were quantitative, were experimental or quasi-experimental, reported effect sizes or data and addressed children 0–7 years old. This yielded 36 studies of 42 programmes evaluating quality ratings, and nine studies of 10 programmes evaluating both quality ratings and pupil outcomes.
Results showed that professional development improved the external quality ratings (as evaluated using the Classroom Assessment Scoring System, Early Language and Literacy Classroom Observation, Environmental Rating Scales and Individualized Classroom Assessment Scoring System) of early childhood education (effect size=+0.68), with programmes providing 45–60 PD hours having the greatest impact on classroom practice as compared to programmes offering fewer or more hours. This was true regardless of whether teachers held a university degree or not. Further, programmes that solely used coaching were almost three times as effective as other programmes. A second meta-analysis of a subset of studies (n=486 teachers, 4,504 children) showed that improvement in the quality of early childhood education programmes was correlated with improvements in child development (effect size=+0.14) as determined by language and literacy scores, maths scores, social-behavioural ratings, and assessment of cognition, knowledge and school readiness.
Source: Impact of in-service professional development programs for early childhood teachers on quality ratings and child outcomes: a meta-analysis (January 2018), Review of Educational Research, Vol 88, Issue 3
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
What difference do smaller class sizes, and more teachers, make in early childhood education (ECE)?
A meta-analysis by Jocelyn Bowne and colleagues, published in Educational Evaluation and Policy Analysis, attempts to find some answers. The analysis included evaluations of ECE programs in the US between 1960 and 2007. The evaluations were either experimental studies, used a high-quality quasi-experimental design, or showed baseline equivalence of treatment and control participants. In total, 38 studies were included, all of which looked at children ages 3 to 5 years old attending an ECE center for 10 hours a week or more for at least 4 months. Child-teacher ratios ranged from 5:1 to 15:1 and class sizes from 11 to 25.
The findings were as follows:
- Above a child–teacher ratio of 7.5:1, changing the ratio had no effect on children’s cognitive and achievement outcomes. Below this, a reduction of the ratio by one child per teacher predicted an effect size of +0.22.
- For class sizes greater than 15, increasing the size of the class had little effect on children’s cognitive and achievement outcomes. Below this, one child fewer in the class size predicted an effect size of +0.10.
The authors caution that these findings are correlational, rather than causal, so changing class sizes or ratios, certainly at scale, may not lead to these results. However, they conclude that “very small and/or well-staffed classrooms might confer some small benefits for children’s cognitive and academic learning”.
Source: A meta-analysis of class sizes and ratios in early childhood education programs: Are thresholds of quality associated with greater impacts on cognitive, achievement, and socioemotional outcomes? (February 2017), Educational Evaluation and Policy Analysis, Vol 39, Issue 3
From September 2013, two-year-old children living in the 20% most disadvantaged households in the UK became eligible for 15 hours of funded early childhood education and care (ECEC) per week. This was extended in September 2014 to two-year-old children living in the 40% most disadvantaged households. The longitudinal Study of Early Education and Development (SEED) followed the progress of children from approximately 6,000 families, from ages two to seven, to help provide the Department for Education (DfE) with evidence on the effectiveness of early years education.
This latest DfE impact study presents findings for 4,583 children from the SEED longitudinal study and focuses on the relationship between the amount and type of ECEC between age two and three and children’s cognitive and socioemotional development at age three. After controlling for home environment and demographic factors, the amount of ECEC received between the ages of two and three was found to be associated with cognitive and socioemotional developmental benefits. There was also evidence that ECEC is associated with higher cognitive verbal ability (naming vocabulary). The study also found that children who participated in more than 35 hours of ECEC per week between two- and three-years-old had higher levels of conduct problems and lower levels of emotional self-regulation than children receiving less than two hours a week, although this group of children comprised only 3.25% of the sample (149 children). The researchers note that the children who received more than 35 hours of ECEC between two- and three-years-old were also more likely to have started early (ie, during the first year of life), and that this early start combined with high use when aged two to three is a significant factor behind these effects.
Source: Study of early education and development (SEED): Impact study on early education use and child outcomes up to age three. Research report (July 2017), Department for Education. Reference: DFE-RR706