feat(pipeline): derive dim_school.has_sixth_form from GIAS flag

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-07 10:30:39 +01:00
parent 3b35849bb3
commit d11faefebd
3 changed files with 20 additions and 0 deletions
@@ -52,6 +52,14 @@ select
    s.religious_character,
    s.gender,
    s.statutory_low_age || '-' || s.statutory_high_age as age_range,
+    -- Authoritative sixth-form flag (spec §3): GIAS OfficialSixthForm.
+    -- "Not applicable" (nurseries, primaries, PRUs) => false. Blank GIAS
+    -- value (rare, new establishments) falls back to the statutory age range.
+    case
+        when s.official_sixth_form = 'Has a sixth form' then true
+        when s.official_sixth_form in ('Does not have a sixth form', 'Not applicable') then false
+        else coalesce(s.statutory_high_age >= 18, false)
+    end as has_sixth_form,
    s.capacity,
    s.total_pupils,
    concat_ws(' ', s.head_title, s.head_first_name, s.head_last_name) as headteacher_name,