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EBP Compendium: Summary of Systematic Review

Institute of Education Sciences
Vocabulary Improvement Program for English Language Learners and Their Classmates

IES What Works Clearinghouse Intervention Report.

Indicators of Review Quality:

The review addresses a clearly focused question No
Criteria for inclusion of studies are provided Yes*
Search strategy is described in sufficient detail for replication No
Included studies are assessed for study quality Yes
Quality assessments are reproducible Yes

Description: This is a systematic review of studies investigating the effectiveness of a vocabulary instruction program, the Vocabulary Improvement Program for English Language Learners and Their Classmates (VIP)on the expressive language outcomes of elementary school-aged children (Grades K-4). The effectiveness of the intervention was categorized as Meets Evidence Standards, Meets Evidence Standards with Reservation or Does Not Meet Evidence Standard based on the What Works Clearinghouse (WWC) classification system. Well-designed randomized controlled trials are considered strong evidence (Meets Evidence Standards), quasi-experimental studies are considered weaker evidence (Meets Evidence Standards with Reservations) and single-case design studies are considered insufficient evidence or under development (Does Not Meet Evidence Standards).

Question(s) Addressed:

Question not specifically stated.

Population: English language learning students in fifth grade

Intervention/Assessment: VIP

Number of Studies Included: 1

Years Included: Not stated



  • Treatment
    • Language
      • Expressive Language
        • Vocabulary Instruction - One study included in this review found that the VIP "had potentially positive effects in reading achievement and English language development" (p. 4) (Meets Evidence Standards with Reservations).

Keywords: English Language Learners, Literacy

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*See the WWC Evidence Review Protocol for inclusion criteria.

Added to Compendium: March 2012

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