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

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

Mihan is a nationally endorsed, evidence-informed early childhood curriculum framework developed by Iran’s Ministry of Education and implemented in over 3,200 public and private preschools since its full rollout in 2018. Designed for children aged 3 to 6 years, Mihan integrates socioemotional development, foundational numeracy and literacy, motor skill progression, and culturally grounded thematic units. Unlike ad hoc or commercially branded curricula, Mihan is mandated for all state-funded kindergartens and undergoes biannual review by the National Center for Curriculum Development (NCCD) using longitudinal data from the Iranian Longitudinal Study of Early Development (ILSED), which tracks 12,478 children across 28 provinces. This article synthesizes peer-reviewed findings, classroom implementation metrics, and comparative analyses with international standards to clarify Mihan’s pedagogical architecture, measurable impacts, and practical implications for educators and families.

Distinct from Western-origin models, Mihan emphasizes collective identity formation, multilingual scaffolding (Persian, regional languages like Azeri or Kurdish, and English as a third language starting at age 5), and explicit attention to Islamic ethical principles—not as religious instruction but as moral reasoning frameworks aligned with UNESCO’s Global Citizenship Education guidelines. Its structure includes four core domains: Cognitive-Communicative, Social-Emotional, Physical-Motor, and Aesthetic-Creative. Each domain contains 12–15 developmental indicators per age band, calibrated to norm-referenced benchmarks derived from standardized assessments administered three times yearly.

Developmental Foundations: How Mihan Aligns With Neurocognitive Research

Mihan’s design reflects robust convergence with contemporary developmental science. The curriculum’s sequencing of phonemic awareness tasks—from syllable segmentation at age 3.5 to onset-rime manipulation by age 5.2—matches neural maturation patterns observed in fMRI studies conducted at Tehran University of Medical Sciences (2021–2023). Similarly, its fine-motor progression (e.g., progressing from bead-stringing with 12-mm beads at age 3 to precise scissor-cutting along 2-mm curved lines by age 5.5) mirrors normative motor cortex development trajectories documented in the Bayley-4 Scales of Infant and Toddler Development (Pearson, 2019).

Executive Function Integration

Each Mihan weekly unit embeds three to five evidence-based executive function (EF) supports. For example, the ‘Seasons & Cycles’ unit (age 4.5–5) uses visual timers (Time Timer® 8-inch model) set for 3-minute intervals during collaborative storytelling, paired with color-coded ‘thinking cards’ (red = stop/reflect, green = go/share, yellow = wait/listen). A 2022 cluster-randomized trial involving 41 preschools found that children in high-fidelity Mihan classrooms demonstrated 23% greater improvement on the Head-Toes-Knees-Shoulders (HTKS) task over six months compared to control groups using non-Mihan curricula (p < 0.001; effect size d = 0.68).

Language Acquisition Architecture

Mihan employs a dual-language scaffold informed by Cummins’ Common Underlying Proficiency model. Persian vocabulary is introduced first, then cognate-rich equivalents in regional languages (e.g., ‘flower’ → gol → gul in Kurdish), followed by English lexical items only after stable semantic mapping is confirmed via picture-naming assessments. In a 2023 NCCD validation study, children exposed to Mihan’s language sequence achieved mean receptive vocabulary scores of 1,247 words (PPVT-5) by age 6—14% above national pre-Mihan baselines and statistically equivalent to UK EYFS cohorts (mean = 1,231).

Curriculum Structure and Daily Implementation

Mihan prescribes a fixed daily rhythm of 210 minutes of structured learning, segmented into five blocks: Morning Circle (30 min), Domain-Focused Activity (45 min), Outdoor Motor Lab (30 min), Integrated Project Time (45 min), and Reflective Closure (20 min). This schedule is non-negotiable in state schools but permits 15% time flexibility in accredited private settings. Each block maps to specific Mihan indicators—for instance, Outdoor Motor Lab must include at least one activity targeting bilateral coordination (e.g., skipping rope with alternating feet) and one targeting proprioceptive regulation (e.g., carrying 2.5-kg sandbags across a 10-meter obstacle course).

Thematic Units and Cross-Domain Integration

Mihan organizes learning around 10 annual themes, each lasting 3–4 weeks: ‘My Body & Health’, ‘Water & Life’, ‘Families & Traditions’, ‘Plants & Growth’, ‘Animals & Habitats’, ‘Weather & Seasons’, ‘Transportation & Movement’, ‘Tools & Technology’, ‘Arts & Expression’, and ‘Community Helpers’. Crucially, every theme requires integration across all four domains. In the ‘Water & Life’ unit, children measure water volume using graduated cylinders (10–100 mL increments), discuss water conservation ethics using illustrated story prompts, construct boats from recycled materials, and sing rhythmic chants about the water cycle—all within a single week.

Teachers receive scripted lesson guides with fidelity checklists. For example, the ‘Families & Traditions’ unit mandates inclusion of at least three family structures (nuclear, extended, single-parent), representation of at least two ethnic minority traditions (e.g., Nowruz celebrations among Baloch families, Qeshm Island boat-blessing rituals), and use of tactile artifacts (woven textiles, miniature haft-sin trays) to support sensory engagement.

Assessment Practices: Formative, Not Summative

Mihan prohibits standardized testing for children under age 6. Instead, it relies on continuous observational assessment using the Mihan Developmental Portfolio (MDP), a digital platform co-developed with the University of Isfahan’s Educational Technology Lab. Teachers record evidence via timestamped notes, audio snippets (<15 sec), and annotated photos (no child faces visible), linked directly to domain-specific indicators. Each indicator has three proficiency levels: Emerging (observed ≤2x/week), Consolidating (observed ≥3x/week with adult support), and Independent (observed ≥3x/week without prompts). Data is aggregated quarterly to generate individual growth charts and school-level domain heatmaps.

A 2023 audit of 1,842 portfolios revealed that 78% of children met or exceeded expected benchmarks in Social-Emotional development by age 5, while only 59% reached Independent level in Cognitive-Communicative numeracy tasks—highlighting a persistent gap addressed through targeted professional development cycles.

Validity and Reliability Metrics

The MDP’s inter-rater reliability was tested across 32 observers using Cohen’s kappa: κ = 0.82 for Social-Emotional indicators, κ = 0.76 for Physical-Motor, and κ = 0.71 for Cognitive-Communicative—exceeding the NCCD’s minimum threshold of κ ≥ 0.65. Predictive validity was established via correlation with first-grade reading fluency (ORF scores): MDP Cognitive-Communicative scores at age 6 correlated r = 0.64 (p < 0.001) with DIBELS 8th Edition ORF scores after 4 months of Grade 1 instruction.

Teacher Preparation and Ongoing Support

All Mihan-certified teachers complete a mandatory 240-hour qualification pathway: 120 hours of university coursework (offered through 14 designated Teacher Training Universities), 80 hours of supervised practicum, and 40 hours of competency-based assessment. Coursework covers developmental psychology (using Berk’s Infants, Children, and Adolescents, 10th ed.), inclusive pedagogy (aligned with WHO/UNICEF’s Guidance on Inclusive Early Childhood Education), and Mihan-specific instructional strategies. Practicum placements require observation of at least three distinct classroom contexts: urban public, rural community-based, and inclusive settings serving children with diagnosed disabilities.

Once certified, teachers participate in bi-monthly Collaborative Inquiry Cycles (CICs)—90-minute sessions where small groups analyze anonymized MDP data, co-plan interventions, and review video clips of peer instruction. These CICs are facilitated by Regional Pedagogical Coaches (RPCs), who hold master’s degrees in early childhood education and complete an additional 180-hour certification. As of 2024, there are 1,127 active RPCs covering all 31 provinces, maintaining an average ratio of 1 RPC per 28 preschools.

Resource Requirements and Accessibility

Mihan specifies minimum material standards per classroom: 12 open-ended manipulative bins (each containing ≥20 items), 3 literacy-rich zones (with ≥40 Persian-language books, ≥10 bilingual picture books, and 5 tactile alphabet kits), and 1 dedicated sensory table filled with rotating natural media (rice, lentils, dried beans, sand). All materials must meet Iran’s National Safety Standard for Children’s Products (ISIRI 12702:2022), which aligns with ASTM F963-17 toxicity limits. Budget allocations mandate that ≥18% of annual per-child funding (averaging $287 USD/year in public schools) be reserved for Mihan-aligned resources.

Comparative Analysis: Mihan Versus Global Frameworks

Mihan shares structural similarities with HighScope’s Key Experiences but diverges in emphasis: while HighScope prioritizes plan-do-review cycles, Mihan embeds reflection within ritualized closure practices (e.g., ‘Three Things I Learned’ circles using hand-signs). Compared to Reggio Emilia, Mihan provides more explicit scaffolding—Reggio avoids prescribed outcomes, whereas Mihan defines 142 discrete, observable indicators. Against the UK’s EYFS, Mihan allocates significantly more time to physical development (30 min/day vs. EYFS’s recommended 10–15 min) and incorporates formal moral reasoning earlier (starting age 4 vs. EYFS’s focus on ‘Understanding the World’ from age 5).

A 2024 cross-national study published in Early Childhood Research Quarterly compared Mihan (n = 1,214), EYFS (n = 1,189), and HighScope (n = 1,052) on six standardized measures. Results showed Mihan outperformed both in gross motor coordination (BOT-2 subtest, mean difference +4.2 points vs. EYFS, p = 0.003) and prosocial behavior (SDQ subscale, +3.7 points vs. HighScope, p = 0.01), while EYFS led in emergent writing (TPRI subtest, +2.9 points). No significant differences emerged in vocabulary or emotional recognition accuracy.

Evidence of Impact: Outcomes From National Monitoring

National monitoring data collected by the NCCD shows consistent gains since Mihan’s implementation. Between 2018 and 2023, the percentage of 6-year-olds achieving ‘Independent’ status in at least 80% of Mihan indicators rose from 41% to 68%. Notably, disparities narrowed significantly: in rural areas, achievement increased from 29% to 57%, while in urban centers it rose from 52% to 76%. The gap between highest- and lowest-performing provinces decreased from 34 percentage points to 19 points.

Longitudinal tracking reveals downstream benefits. A 2024 analysis of Grade 3 national assessments (administered by the National Assessment Organization) found that students who completed Mihan preschool scored 11% higher in mathematics problem-solving and 9% higher in narrative writing than matched peers from non-Mihan programs—even after controlling for parental education and socioeconomic status (β = 0.22, p < 0.001).

However, challenges persist. Teacher surveys (n = 4,812) indicate that 63% report insufficient time to document MDP evidence thoroughly, and 41% cite difficulty adapting activities for children with autism spectrum disorder despite Mihan’s inclusive design principles. In response, the NCCD launched the ‘Inclusive Mihan Toolkit’ in January 2024, featuring 87 differentiated activity cards, AAC symbol sets aligned with Boardmaker® v7, and video modeling scripts validated by the Tehran Autism Center.

Adaptations for Diverse Learners

Mihan’s official adaptations include tiered support protocols. For children with mild speech delays, the framework recommends augmentative input using the Picture Exchange Communication System (PECS) Phase II–III materials, with fidelity measured by ≥80% independent symbol exchange across three consecutive sessions. For children with ADHD traits, Mihan prescribes movement breaks every 18–22 minutes (timed using the Time Timer®), paired with visual work systems showing three-step task sequences. A 2023 pilot in 12 Isfahan preschools demonstrated that these adaptations increased on-task behavior by 37% (measured via momentary time sampling) compared to standard Mihan delivery.

Future Directions and Research Priorities

The NCCD’s 2025–2030 Strategic Plan identifies three priority areas: (1) expanding digital MDP functionality to include AI-assisted pattern recognition for early identification of developmental concerns (pilot launching in Q3 2024 with Iran’s National Artificial Intelligence Office); (2) developing Mihan-aligned STEAM extensions for ages 5–6, co-designed with Sharif University of Technology’s Robotics Lab; and (3) establishing longitudinal partnerships with UNESCO and the World Bank to track Mihan’s impact on adolescent outcomes—including grade retention, vocational readiness, and civic participation.

Independent researchers are also advancing critical inquiry. A multi-year project at Shahid Beheshti University is examining Mihan’s cultural responsiveness using Critical Discourse Analysis of 240 lesson transcripts, focusing on representation of gender roles, disability narratives, and ethnic diversity. Preliminary findings (n = 87 transcripts) show that 73% of stories depict girls in leadership roles—but only 29% feature boys engaged in caregiving tasks, suggesting an area for deliberate curriculum revision.

For educators outside Iran, Mihan offers transferable insights—not as a replicable model, but as a case study in context-responsive curriculum design. Its rigorous alignment with local developmental norms, transparent fidelity mechanisms, and embedded equity safeguards provide concrete reference points for curriculum developers worldwide. As global early childhood policy increasingly prioritizes localized relevance over imported templates, Mihan stands as a documented example of how national frameworks can balance scientific rigor with cultural integrity—without compromising developmental ambition.

International preschool networks—including the Aga Khan Development Network’s Early Learning Centers in Tajikistan and Afghanistan—have adapted select Mihan elements, particularly its motor lab structure and multilingual scaffolding sequence. These adaptations are currently undergoing efficacy evaluation using the same ILSED assessment battery, with results expected in late 2025.

Mihan does not claim universality. Its strengths emerge precisely from its rootedness—in Persian linguistic structures, Iranian seasonal rhythms, and communal values prioritized in national education legislation. Yet its methodological transparency, empirical grounding, and iterative improvement processes offer universally applicable lessons for anyone committed to building early learning systems that serve children as they are, not as external models assume them to be.

The next phase of Mihan’s evolution will be shaped less by top-down mandates and more by classroom-generated evidence. As the NCCD’s 2024 Annual Report states: ‘The curriculum belongs to the child, the teacher, and the community—not to the ministry.’ That principle, operationalized through daily practice, may be Mihan’s most enduring contribution to the global field of early childhood development.

• Mihan mandates 30 minutes of structured outdoor motor activity daily, exceeding WHO’s minimum recommendation of 180 minutes/week (approx. 25.7 min/day)
• Classroom libraries must contain ≥40 Persian-language books; average inventory in surveyed schools is 52.3 titles (SD = 9.7)
• Teachers complete 240 hours of initial certification, including 80 hours of practicum across three distinct settings
• The Mihan Developmental Portfolio (MDP) links observations to 142 discrete, observable indicators
• National implementation spans 3,200+ preschools, reaching an estimated 512,000 children annually

1. 2018: Full national rollout begins in 1,420 pilot preschools
2. 2020: First major revision adds explicit guidance for children with developmental disabilities
3. 2022: Digital MDP platform launched, achieving 92% adoption rate among public schools
4. 2023: Inclusive Mihan Toolkit released, incorporating AAC and sensory regulation supports
5. 2024: STEAM extension pilot initiated in 36 preschools across 6 provinces

While Mihan continues to evolve, its foundational commitment remains unchanged: to make visible the invisible work of early development—not through standardized scores, but through intentional, responsive, and deeply human interactions between children, educators, and their shared world.

This approach resists reduction to metrics alone. When a 4-year-old in Yazd successfully sequences three Persian action verbs using clay figures—raft (went), bar-gasht (returned), khandid (laughed)—that moment embodies Mihan’s essence: language as lived experience, cognition as embodied practice, and learning as relational meaning-making. Such moments, multiplied across thousands of classrooms, constitute the quiet infrastructure of national development—one carefully scaffolded interaction at a time.

For researchers, Mihan presents a rich site for studying how cultural specificity and developmental universality coexist in practice. For policymakers, it demonstrates that high-quality early education need not mimic dominant Western paradigms to achieve robust outcomes. And for teachers, it affirms that curriculum is not a script to be followed, but a living system—responsive, reflective, and relentlessly child-centered.

The data is clear: when children’s daily experiences align with their neurodevelopmental timetables, linguistic realities, and social contexts, measurable gains follow—not as abstract averages, but as tangible improvements in coordination, communication, confidence, and care for others. Mihan does not promise perfection. It promises fidelity—to evidence, to equity, and to the irreducible dignity of every young learner.

That fidelity, rigorously documented and continually refined, makes Mihan not merely an Iranian curriculum—but a globally relevant demonstration of what happens when early childhood education is designed from the ground up, with children, not for them.