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Coverage

56,681 of 56,681 columns decided — 100.0% · 12,642 bound (22.3%) · 0 still unread

Bound: 12,642; 22.3%; a concept was found and asserted for the column.
Refused: 32,953; 58.1%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 11,086; 19.6%; read, but the evidence did not settle it.
Unanalysed: 0; 0.0%; nobody has read this column yet.

56,681 columns in the coverage ledger · read from /api/field-coverage on citytap-prod · source last observed Oct 10, 2026, 10:09 PM

3,026 datasets, 56,681 catalogued fields, 0 of them still unread. Every band below is a share of that, worst first. Open one to see its datasets.

2018-2019 Prelim Percentage Class Size Borough - K-8TH

8as3-nzhd

Fields catalogued

Understood

Checked, no match

Nobody has looked

Every field decided — Every field carries a verdict — which does not mean every field is understood.

Every field in this dataset

Covered and uncovered alike, in the order the publisher lists them. A field with no verdict is one nobody has looked at yet.

Field	Type	What we know	Meaning	How it was decided	Shared term
class_size Class Size	Text	Checked, no match	—	value_domain_read card=33 nonnull=1142 null=0 smallest=10 largest=9 top[8 of 20]={15×51; 26×45; 16×45; 27×45; 28×45; 24×45; 20×45; >34×45}	—
number_of_students Number of Students	Number	Not enough to tell	—	value_profile card=645 nonnull=848 null=0 smallest=3 largest=3228 top[8 of 20]={26×10; 27×8; 28×8; 25×8; 32×7; 21×5; 29×5; 23×5}	—
grade_level Grade Level	Text	Checked, no match	—	value_domain_read card=10 nonnull=848 null=0 smallest=1 largest=K-8 SC top[8 of 10]={4×101; 3×98; 2×97; 5×95; 1×93; K×87; K-8 SC×85; 8×64}	—
program_type Program Type	Text	Understood	category.classification Publisher classification	value_domain_read top[7]={Gen Ed/ICT/G&T×185; SC 12:1:1×12; SC 12:1×11; SC 8:1:1×10; SC 15:1×6; SC 12:1:4×2; SC 6:1:1×1}	—
borough Borough	Text	Understood	place.borough Borough	value_domain_read	borough
number_of_classes Number of Classes	Number	Not enough to tell	—	value_profile card=116 nonnull=846 null=0 smallest=1 largest=207 top[8 of 20]={1×85; 6×34; 3×23; 2×22; 17×19; 4×18; 18×17; 13×17}	—
of_students_within_grade % of Students within Grade	Number	Checked, no match	—	value_domain_read card=200 nonnull=1022 null=0 smallest=0.1 largest=100.0 top[8 of 20]={0.3×28; 0.8×24; 0.9×23; 0.5×22; 0.7×22; 0.2×20; 0.4×20; 1.2×16}	—