{
  "_table": "Attendance-area profile per school \u00d7 boundary level: income (household/family means, medians, quartiles), demographics, family-with-children income, property values. Neighborhood = the school's attendance area, not its enrolled students.",
  "join_key": "school_code_str (+ level)",
  "acs_year": 2024,
  "sources": {
    "income_demographics": "ACS 2024 5-year, block-group, apportioned by 2020-block housing/population",
    "family_with_children": "ACS 2024 5-year B19131 (tract), PUMS-tailed",
    "property": "Maryland SDAT/MDP statewide assessments (parcel, current assessed value)"
  },
  "notes": {
    "income": "mean from B19025/B19127 aggregates; median/quartiles mean-constrained (validated vs PUMS); see ACS_LINK_README.md",
    "property": "assessed value \u2248 market; median_value_apartment is whole-building (not per-unit)",
    "ES": "income_shrunk = empirical-Bayes estimate toward parent HS area; prefer it for ES"
  }
}