Research Reports

How do teacher experience, credentialing, and education shape early childhood language environments?...

How does participating in LENA Grow impact CLASS scores? Data from five different evaluations spanning 2018-2025 show a clear, positive answer....

Teacher-child ratios — the number of teachers vs. children in a classroom — are a major factor in classroom quality....

In this report, we examine the role conversational turns may play in a child’s early development of self-esteem....

Conversational turns are simple back-and-forth alternations between a child and an adult. They're simple, but they're also powerful....

In this report, we're excited to share never-before-seen early talk we've collected on over 10,000 children annually impacted by our programs....