US School Calendar Database — 13,700 Districts, Day-Level Data

Data Quality

What you're actually getting -- no hedging, no asterisks.

✓

99.1% of US students covered.

44.3M of 44.7M students have verified high-confidence calendar data. The major metro areas, suburban systems, and most rural districts are all here with verified schedules.

✓

Every day has a classification.

365 rows per district per year. Each day is classified: in-session, weekend, holiday, spring break, winter break, summer, etc. No gaps.

✓

Every cell has a confidence score.

0.0 to 1.0 per cell. You decide your threshold. Filter by confidence to match your risk tolerance.

i

Only 16 districts remain uncovered.

All under 2,000 enrollment. These are tiny districts with minimal web presence. We're actively filling them in.

✓

Three school years available.

2024-2025, 2025-2026, and 2026-2027. Historical context for year-over-year analysis, plus forward-looking data for planning.

What's in Each Row

Day-level fields. One row per district per day. Clean, structured, ready for your pipeline.

📅 Date date

✅ In Session is_in_session

📋 Day Type day_type

🌴 Break Name break_name

📈 Confidence confidence

📡 Source source_method

🔑 District ID district_id

🏫 District Name district_name

📍 State state

👥 Enrollment enrollment

📚 School Year school_year

Coverage

Near-complete coverage across all 50 states and DC.

99.9%

District Coverage

99.1%

Enrollment Coverage

50 + DC

States

Only 16 districts remain uncovered, all under 2,000 enrollment. Every major metro, every large suburban system, and the vast majority of rural districts are included. NCES IDs on every row for easy joins to Census, NCES, and other federal datasets.

Who Uses This

School schedule data is surprisingly hard to get at scale. Here's who needs it.

🎢

Theme Parks & Attractions

Predict crowd patterns by knowing exactly when school breaks start and end across every state. Spring break alone shifts millions of visitors.

🏨

Hotels & Travel

Dynamic pricing tied to school calendar clusters. Know which weeks will see family travel surges before your competitors do.

📊

Demand Forecasting

Any business affected by family travel patterns: airlines, rental cars, restaurants, retail. School schedules are one of the strongest demand signals.

🏛

Government & Research

Transportation planning, public health modeling, education policy analysis. Federal NCES IDs make joining to other datasets trivial.

📈

Market Research

Understand regional seasonality patterns at the district level. Which states have late starts? Early summers? Unusual break patterns?

🤖

ML Feature Engineering

Feed school schedules directly into your models as features. "Percentage of students on break" is a powerful predictor for many time-series problems.

API Access

RESTful JSON or CSV. Day-level queries by district, date, state. Dead simple. Read the full docs →

            # Query a single district on a specific date

            GET /api/v1/days?district_id=FL_1200030&date=2026-03-27

            # Response

            {

              "district": "Alachua County",

              "state": "FL",

              "date": "2026-03-27",

              "is_in_session": 0.0,

              "day_type": "BREAK",

              "break_name": "Spring Break",

              "confidence": 0.95,

              "source_method": "observed",

              "school_year": "2025-2026"

            }

            # Download full CSV for a state

            curl "https://hazeydata.ai/api/v1/days?state=FL&format=csv" \

              -H "Authorization: Bearer ssd_live_your_key_here" \

              -o florida_school_days.csv

Pricing

One plan. Everything included. No tiers, no upsells.

Everything Included

$99/mo

All districts. All school years. Day-level data. Full API access.

✓ All 13,700+ districts nationwide
✓ All 3 school years (2024-2027)
✓ Day-level data (365 rows per district per year)
✓ Full API access (JSON + CSV)
✓ Confidence scores and source methods
✓ NCES IDs for data joining

Need custom datasets or bulk historical data? Contact us →

Know When Every School in America Is on Break