References
The research behind the ideas.
Explore the evidence behind our early-learning articles and practical suggestions. Each source explains a particular part of learning.
These sources support general educational ideas. They do not evaluate or endorse RTL Clubs, and individual children's progress varies.
Research synthesis
Developing Early Literacy
National Early Literacy Panel · 2008
Early knowledge of letters and sounds is associated with later literacy. The report also examines teaching approaches that support early literacy development.
What this means in practice: Explore sounds and letters through conversation, books and age-appropriate activities.
Who the research concerns and its limits
Research on children from birth to age five. A predictor of later reading is not a guarantee of an individual child's results.
Used on this site: Early reading foundations on Why start young.
Peer-reviewed meta-analysis
The impact of shared book reading on children's language skills: A meta-analysis
Noble and colleagues · 2019
Shared reading can support language development. Estimates of the benefit depend on the studies and comparisons included.
What this means in practice: Make shared reading an enjoyable conversation, with room for the child to participate.
Who the research concerns and its limits
The authors found smaller effects than some earlier reviews. Research averages should not be used to predict a particular child's progress.
Used on this site: Context for the shared reading guidance on Why start young.
Research explanation
Serve and Return
Center on the Developing Child at Harvard University · Accessed September 2026
Responsive, back-and-forth exchanges with adults support early development, including language and social skills.
What this means in practice: Notice what interests your child, respond and leave time for their reply.
Who the research concerns and its limits
An accessible explanation of developmental research, not a study of RTL programmes or a prescribed lesson schedule.
Used on this site: Conversation guidance on Why start young.
Evidence review and guidance
Communication and language approaches
Education Endowment Foundation · Accessed September 2026
Intentional support for communication and language can help children's early learning. The quality of adult-child interaction matters.
What this means in practice: Introduce useful words, ask open questions and encourage children to explain their ideas.
Who the research concerns and its limits
Evidence from early-years educational settings and interventions. It does not demonstrate the effectiveness of RTL Clubs.
Used on this site: Adult support guidance on Why start young.
Programme diagrams and facts
Our learning paths and curriculum diagrams explain RTL's programme structure. They are not charts of measured educational outcomes. The RTL English curriculum is the source for its stages, levels and books.
We do not present a predicted success curve by age or turn research averages into promises for your child.
Our teaching heritage
CriCo's programme introduction credits Elaine Shannon with developing RTL English. A 2015 biographical profile describes her teaching and the founding of Ready To Learn. These are historical sources, separate from the academic research above.