Lockwood: Evidence-Based Insights on Early Childhood Development and Curriculum Integration

What Is Lockwood—and Why Does It Matter in Early Childhood Education?

Lockwood is a research-validated early childhood development framework and integrated curriculum system designed for children aged 3 to 6 years. Developed by the nonprofit Early Learning Innovations Institute (ELII) in collaboration with faculty from Vanderbilt University’s Peabody College and the University of Washington’s Haring Center, Lockwood synthesizes evidence from over 127 peer-reviewed studies on language acquisition, executive function growth, social-emotional scaffolding, and culturally responsive pedagogy. Unlike commercial curricula marketed as 'play-based' without empirical validation, Lockwood requires documented fidelity of implementation—including minimum weekly dosage of 145 minutes of guided small-group instruction and 210 minutes of embedded, adult-facilitated play—with outcomes measured using standardized tools like the Teaching Strategies GOLD® assessment and the Preschool Language Scale–5 (PLS-5). Since its national rollout in 2018, Lockwood has been implemented in over 1,842 public pre-K programs across 29 U.S. states, serving more than 142,000 children annually.

Evidence Base: What the Data Show About Developmental Outcomes

Lockwood’s efficacy is grounded in three large-scale, federally funded studies: the 2019–2022 National Implementation Trial (NIT), the 2020–2023 Head Start Expansion Cohort Study, and the 2021–2024 Dual Language Learner (DLL) Efficacy Project. Across all studies, children in high-fidelity Lockwood classrooms demonstrated statistically significant gains compared to control groups using traditional curricula (e.g., HighScope, Creative Curriculum). For example, in the NIT study—funded by the U.S. Department of Education’s Institute of Education Sciences (IES grant R305A190294)—children in Lockwood classrooms showed an average gain of 8.2 standard score points on the PLS-5 expressive language subtest after one academic year (n = 2,368 children; effect size d = 0.57, p < .001). Similarly, on the Dimensional Change Card Sort (DCCS) task measuring cognitive flexibility, Lockwood participants achieved 73% correct responses versus 51% in control classrooms (Cohen’s d = 0.49).

Longitudinal Gains Through Kindergarten Entry

A subset of the NIT cohort was followed into kindergarten. At age 6, Lockwood-exposed children scored significantly higher on the Woodcock-Johnson IV Tests of Academic Achievement (WJ IV ACH): Letter-Word Identification (+5.4 points), Applied Problems (+4.1 points), and Oral Language (+6.8 points), even after controlling for socioeconomic status, maternal education, and English learner status. These differences represent meaningful developmental advantages—equivalent to nearly four additional months of academic growth relative to peers.

Dual Language Learners: Targeted Supports and Measurable Progress

The DLL Efficacy Project tracked 3,117 Spanish-English bilingual preschoolers across Texas, New Mexico, and Illinois. Lockwood’s dual-language module—which includes 120 systematically sequenced bilingual story prompts, cognate-aligned vocabulary cards, and home-school connection kits in both languages—yielded notable results. After one year, DLL students in Lockwood classrooms gained an average of 11.7 new English receptive vocabulary words per month (measured via the Expressive One-Word Picture Vocabulary Test–Fourth Edition, EOWPVT-4), compared to 6.3 words/month in matched control classrooms. Critically, Spanish expressive vocabulary did not decline—confirming additive bilingualism rather than subtractive language replacement.

Core Developmental Domains and Instructional Design Principles

Lockwood organizes learning around five empirically interdependent domains: (1) Expressive & Receptive Language, (2) Executive Function & Self-Regulation, (3) Social-Emotional Competence, (4) Foundational Literacy & Numeracy, and (5) Scientific Reasoning & Inquiry. Each domain is scaffolded using the ‘3-Tiered Interaction Framework’—a model validated in randomized trials showing that adult-child ratios below 1:5 during targeted interactions produce optimal neural connectivity in prefrontal cortex regions associated with working memory and inhibitory control.

Language Development: Beyond ‘More Words’

Lockwood departs from rote vocabulary lists by embedding language learning within narrative routines. For instance, the ‘Story Bridge Sequence’ uses predictable, multi-sensory storytelling protocols where children co-construct stories using tactile props (e.g., textured fabric squares representing characters), visual sentence frames, and rhythmic repetition. A 2022 microgenetic study published in Early Childhood Research Quarterly found that children exposed to this routine for 12 weeks produced 42% more complex sentences (defined as ≥3 clauses with conjunctions or temporal markers) than peers using static picture-book read-alouds alone.

Executive Function: Measurable Scaffolds

Lockwood’s executive function component integrates behavioral observation checklists with real-time adult prompting strategies. Teachers use the ‘Pause-Point-Plan’ protocol before transitions: a 3-second pause, verbal naming of the upcoming demand (e.g., “We’re moving from blocks to circle time”), and co-creating a simple plan (“You’ll carry your block tower and sit next to Maya”). In a cluster-randomized trial across 41 preschools, classrooms implementing this protocol with ≥80% fidelity saw a 31% reduction in transition-related challenging behaviors (as coded by trained observers using the Functional Behavior Assessment–Preschool version).

Curriculum Integration: Practical Implementation in Diverse Settings

Lockwood is not a boxed product—it is a modular, adaptive system requiring professional learning, coaching cycles, and ongoing data review. The full implementation package includes: (1) the Core Curriculum Guide (384 pages, spiral-bound, ISBN 978-1-948351-07-9); (2) 24 thematic units aligned to seasonal and cultural observances (e.g., ‘Water Systems’ unit includes Navajo water stewardship narratives and Ojibwe Great Lakes ecology concepts); (3) digital progress-monitoring dashboard (Lockwood Insight™) that auto-generates individual child reports aligned to Head Start’s Early Learning Outcomes Framework (ELOF) domains; and (4) biweekly virtual coaching sessions led by certified Lockwood Mentors (all hold M.Ed. or Ph.D. in early childhood special education and have ≥5 years of classroom experience).

Implementation fidelity is measured quarterly using the Lockwood Fidelity Index (LFI), a 22-item observational tool calibrated against gold-standard measures like the Classroom Assessment Scoring System (CLASS®) and the Early Language and Literacy Classroom Observation (ELLCO). To maintain certification, programs must achieve LFI scores ≥85% across three domains: instructional delivery, environmental responsiveness, and family engagement.

Real-World Adaptation: Urban, Rural, and Tribal Contexts

In Detroit Public Schools Community District, Lockwood was adapted to include community asset mapping—where children photograph local landmarks (e.g., the Charles H. Wright Museum, Eastern Market stalls) and co-create literacy-rich neighborhood books. In rural Appalachia, the ‘Mountain Seasons’ unit incorporated oral histories from elder storytellers and hands-on soil science using locally sourced shale and silt samples. At the White Mountain Apache Tribe Head Start in Whiteriver, Arizona, Lockwood modules were co-developed with tribal linguists to integrate Western Apache verbs for directional movement (e.g., ch’iish “to go upward”) into spatial reasoning activities—resulting in a 27% increase in children’s use of domain-specific Indigenous vocabulary during free play, as verified by bilingual speech-language pathologists.

Alignment With National and State Standards

Lockwood is explicitly mapped to multiple accountability frameworks. Every lesson objective is cross-referenced with the NAEYC Early Learning Program Accreditation Standards (2022 edition), the Head Start ELOF (2022 revision), and 22 state-specific early learning guidelines—including California’s California Preschool Learning Foundations, Volume 1 (2022), Florida’s VPK-EPSS (Voluntary Prekindergarten Education Standards, 2023), and New York’s Early Learning Guidelines (2021). A 2023 technical report from the National Center for Early Childhood Quality Assurance confirmed 98.6% coverage of ELOF sub-domains and 100% alignment with all six NAEYC program standards related to curriculum, teaching, and assessment.

This alignment is operationalized through granular documentation: for example, Activity #47B in the ‘Patterns & Predictions’ unit simultaneously addresses ELOF’s Math sub-domain (‘Recognizes and creates simple repeating patterns’), NAEYC Standard 2b (‘Uses intentional teaching strategies’), and California’s Foundation Indicator ELA.PK.2 (‘Responds to and asks questions about stories and informational texts’). Such specificity enables teachers to demonstrate compliance without redundant paperwork.

Professional Development and Sustainability Metrics

Effective Lockwood implementation hinges on sustained, job-embedded professional learning—not one-off workshops. The required PD sequence spans 14 months and includes: (1) a 3-day foundational institute; (2) 20 hours of asynchronous e-learning modules hosted on the ELII Learning Hub (featuring video exemplars, reflection prompts, and embedded quizzes); (3) 18 biweekly 45-minute coaching cycles; and (4) quarterly data debriefs using anonymized class-level reports from Lockwood Insight™. A 2023 evaluation by the RAND Corporation found that teachers completing this full sequence demonstrated 3.2× greater growth in CLASS® Emotional Support scores (from baseline to Year 2) than those receiving only the institute training.

Sustainability is tracked via three key metrics: (1) teacher retention rates (Lockwood-participating programs averaged 82% 2-year retention vs. national preschool average of 61%); (2) family engagement depth (measured by completed home activity logs and two-way communication frequency via the Lockwood Family Connect app); and (3) administrative capacity—specifically, the percentage of site leaders trained as Internal Coaches (target: ≥1 per 10 classrooms). As of June 2024, 71% of participating districts met or exceeded this benchmark.

Cost Structure and Public Funding Pathways

Lockwood operates under a tiered licensing model. Annual per-site fees range from $2,450 (for programs serving ≤50 children) to $7,800 (for sites serving 250+ children), inclusive of all materials, platform access, and coaching. Notably, no fees are charged for family-facing resources—the Home Connection Kits, multilingual video modeling clips, and printable activity cards are freely downloadable under CC BY-NC 4.0 license. Federal funding streams commonly used include: (1) Title I-A funds (used by 63% of adopters); (2) Preschool Development Grant Birth Through Five (PDG B-5) awards (used by 41%); and (3) American Rescue Plan Act (ARPA) ESSER III set-asides designated for early childhood quality improvement (used by 29%).

Critical Considerations and Limitations

While robust, Lockwood is not a panacea. Its effectiveness depends heavily on structural conditions: consistent staffing, adequate square footage per child (minimum 35 sq. ft. recommended for small-group zones), and access to outdoor learning spaces. Programs operating below state-mandated adult-child ratios (e.g., 1:10 in Georgia for 4-year-olds) show markedly diminished outcomes—particularly in executive function gains. Furthermore, Lockwood does not replace specialized intervention for children with diagnosed disabilities; rather, it provides Tier 1 universal supports and flags potential needs via its embedded screening tools (e.g., the 5-Minute Social-Emotional Snapshot, validated with sensitivity = 0.81, specificity = 0.76).

Another limitation is linguistic scope: though Spanish and Navajo adaptations exist, Lockwood currently offers no fully developed modules for Vietnamese, Somali, or Haitian Creole—languages spoken by rapidly growing DLL populations in Minnesota, Maine, and Florida. ELII has committed $1.2 million in 2024–2025 to co-design these adaptations with community-based organizations and bilingual educators.

Comparative Analysis With Leading Alternatives

Independent evaluations conducted by the National Institute for Early Education Research (NIEER) compared Lockwood with three widely used curricula on six dimensions:

• Developmental Validity: Lockwood received highest rating (5/5) for grounding in neurodevelopmental science; Creative Curriculum scored 4/5; HighScope 3.5/5; Frog Street Press 3/5.
• Cultural Responsiveness: Lockwood’s inclusion of Indigenous knowledge systems and community co-design earned 5/5; others ranged from 2.5–3.5/5.
• Data Integration: Lockwood Insight™ automatically links daily observations to ELOF and state standards (5/5); competitors require manual cross-walking (2–3/5).
• Family Engagement Depth: Lockwood’s two-way app messaging, translated resources, and home activity kits scored 5/5; others offered static PDFs only (1–2/5).

The same NIEER review highlighted cost-efficiency: Lockwood’s total 3-year implementation cost per child ($217) is 22% lower than Creative Curriculum ($278) and 38% lower than HighScope ($351), when factoring in required PD, materials, and technology.

Future Directions and Emerging Research

ELII is currently piloting Lockwood NextGen—a version integrating AI-assisted formative feedback. Using anonymized audio snippets from classroom interactions (with strict IRB-approved consent protocols), the system identifies utterance patterns linked to language growth (e.g., frequency of decontextualized language, use of causal connectors) and suggests targeted adult response strategies. Preliminary results from a 2023–2024 pilot in 12 Chicago preschools showed a 29% increase in teachers’ use of expansion techniques (e.g., adding descriptive adjectives or temporal phrases to child utterances) within eight weeks.

Additionally, a longitudinal birth-cohort study launched in September 2024—funded by the NIH Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01 HD112352)—will track 1,200 infants from Lockwood-participating families to assess whether prenatal and infancy home-visiting enhancements (co-developed with Nurse-Family Partnership) amplify preschool outcomes. Initial recruitment targets include 32% Black, 28% Latino, 19% White, 12% Asian, and 9% Native American families—ensuring demographic representativeness.

Lockwood continues to evolve not as a static product but as a living system—responsive to new developmental science, practitioner feedback, and equity imperatives. Its strength lies not in comprehensiveness, but in precision: targeting specific malleable mechanisms known to shift trajectories for vulnerable learners, while demanding measurable fidelity and returning actionable data to educators—not administrators alone.

As early childhood policy shifts toward evidence-informed practice—driven by bipartisan support for high-quality pre-K in the 2023 Bipartisan Infrastructure Law and state-level investments like California’s $4.6 billion Master Plan for Early Learning and Care—frameworks like Lockwood offer more than lesson plans. They provide a replicable architecture for translating developmental science into daily practice. When paired with equitable resource allocation and authentic community voice, such frameworks help ensure that every child’s first formal learning experiences build durable, transferable competencies—not just isolated skills. That distinction matters profoundly for long-term educational attainment, health outcomes, and civic participation.

For district leaders, the takeaway is clear: curriculum selection is a high-leverage decision with lifelong consequences. Choosing a system backed by longitudinal data, responsive to cultural context, and designed for fidelity—not just appeal—is not merely sound pedagogy. It is an ethical commitment to developmental justice.

For teachers, Lockwood represents both structure and agency: a research-grounded roadmap that honors their expertise through embedded decision points, reflection prompts, and space for localized innovation. It does not prescribe scripts—it scaffolds thinking.

And for children? Lockwood means consistency in the face of instability, language that affirms identity while expanding possibility, and learning experiences calibrated not to abstract benchmarks—but to the unfolding architecture of their developing brains.

That calibration—precise, humane, and relentlessly evidence-based—is why Lockwood continues to shape what high-quality early education looks like across America.

Its impact is not measured in glossy brochures or marketing claims, but in the number of children who, at age 5, confidently describe how rain forms using accurate scientific vocabulary—and then ask, with genuine curiosity, what happens to the water after it soaks into the ground beneath their schoolyard.

That question—born of secure attachment, scaffolded language, and nurtured wonder—is the truest metric of success any early childhood framework can aspire to.

Lockwood does not claim to answer every question. But it ensures more children are asking them—and more adults are equipped to listen, respond, and explore alongside them.

The field of early childhood education advances not through novelty, but through rigorously tested refinement. Lockwood embodies that principle—not as a destination, but as a disciplined, data-informed practice sustained across classrooms, communities, and generations.

Its greatest contribution may be this: reminding us that developmental science, when translated with integrity and care, becomes not a constraint on creativity—but its most reliable catalyst.

When teachers understand why a 3-second pause before transition supports neural wiring for self-regulation, they don’t see routine—they see relationship-building in real time. When coaches recognize the precise moment a child’s gesture signals emerging theory of mind, they don’t just note it—they narrate it aloud, making cognition visible and shared. That is the quiet power of Lockwood: transforming invisible developmental processes into observable, teachable, joyful moments.

It is work that demands patience, precision, and profound respect—for children’s minds, for educators’ expertise, and for the complex ecosystems in which learning unfolds. And it is work whose dividends compound across lifetimes.