Literacy Express has positive effects on oral language for preschool children, with significant effects in two of three studies¶

Claim · All claims
Evidence · 1 study (3 entries) · causal r2 · q3 · i1–i2
Currency · newest study 2010 · checked against its sources 2026-10-19 (automated, 3 of 3 entries) · not reviewed by a person

Subclaims¶

q3 i2 Farver, Lonigan, and Eppe (2009) found a statistically significant positive effect size of 0.57 on oral language across two vocabulary measures. → Literacy Express 2010 q3 i1 Lonigan et al. (2005) found a statistically significant positive effect size of 0.30 on oral language (PLS-IV Expressive Communication). → Literacy Express 2010 (2) q3 i? PCER Consortium (2008) found no statistically significant or substantively important differences on oral language measures. → Literacy Express 2010 (3)

Evidence¶

Literacy Express 2010¶

Literacy Express. (2010). WWC Intervention Report: Literacy Express. U.S. Department of Education, What Works Clearinghouse. https://ies.ed.gov/ncee/wwc/InterventionReport/288

q3 · i2 · causal · r2

Randomized trial of 96 Spanish-speaking Head Start children in Los Angeles (94 analyzed), comparing combined English-only and transitional Literacy Express groups to High/Scope control. The printed effect size was 0.57, with "0.55 for receptive vocabulary and 0.60 for definitional vocabulary".

"The analyses showed, and the WWC confirmed, a statistically significant positive effect of 0.57 across the two measures (0.55 for receptive vocabulary and 0.60 for definitional vocabulary) when children in the Literacy Express group were compared to children in the control group."

Literacy Express 2010 (2)¶

Literacy Express. (2010). WWC Intervention Report: Literacy Express. U.S. Department of Education, What Works Clearinghouse. https://ies.ed.gov/ncee/wwc/InterventionReport/288

q3 · i1 · causal · r2

Randomized trial assigning 48 preschools in Florida and California; pretest-posttest data for 722 children at risk for academic difficulties. The printed effect size was 0.30 on the PLS-IV Expressive Communication subtest, confirmed by WWC.

"The authors found, and the WWC confirmed, a statistically significant and substantively important positive effect of 0.30 when children in the Literacy Express group were compared to children in the control group."

Literacy Express 2010 (3)¶

Literacy Express. (2010). WWC Intervention Report: Literacy Express. U.S. Department of Education, What Works Clearinghouse. https://ies.ed.gov/ncee/wwc/InterventionReport/288

q3 · i? · causal · r2

Randomized controlled trial in 12 Florida full-day preschools (188 children with pretest and posttest data; 186 analyzed on the PPVT-III and 181 on the TOLD-P:3) comparing Literacy Express to High/Scope on PPVT-III and TOLD-P:3 Grammatic Understanding; no significant differences.

"The analyses showed, and the WWC confirmed, that differences between Literacy Express and the control group curriculum are not statistically significant or substantively important on either of these measures."

Discussion¶

Learner Variables¶

• Communication Skills — outcome: instruction changes it
• Oral Language — outcome: instruction changes it

Related Claims¶

• Literacy Express shows no discernible effects on cognition and math for preschool children — related
• Literacy Express has positive effects on phonological processing for preschool children, with significant effects in two of three studies — related
• Literacy Express has positive effects on print knowledge for preschool children, with significant effects in two of three studies — related
• Headsprout Early Reading has a statistically significant positive effect on the oral language of at-risk preschool children — related
• Headsprout Early Reading has a statistically significant positive effect on the print knowledge of at-risk preschool children — related
• Pre-K Mathematics with DLM Early Childhood Express Math shows no discernible effects on preschool oral language — related