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Coverage

46,873 of 56,681 columns decided — 82.7% · 9,148 bound (16.1%) · 9,808 still unread

Bound: 9,148; 16.1%; a concept was found and asserted for the column.
Refused: 29,070; 51.3%; the column was read and no concept fits. A verdict, not a gap.
Insufficient: 8,655; 15.3%; read, but the evidence did not settle it.
Unanalysed: 9,808; 17.3%; 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, 4:48 PM

3,026 datasets, 56,681 catalogued fields, 9,808 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 - MS & HS

gxt2-i5qe

Fields catalogued

Understood

Checked, no match

Nobody has looked

Most read — At least three quarters of their fields carry a verdict.

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
program_type Program Type	Text	Understood	category.classification Publisher classification	value_profile card=5 nonnull=101 null=0 smallest=Accelerated largest=SC top[5]={ICT×31; Gen Ed×31; SC×30; Accelerated×5; ICT & Acc×4}	—
department Department	Text	Understood	category.classification Publisher classification	value_profile card=4 nonnull=100 null=0 smallest=English largest=Social Studies top[4]={Math×31; Science×26; English×23; Social Studies×20}	—
borough Borough	Text	Understood	place.borough Borough	value_domain_read	borough
of_students_within_grade % of Students within Grade	Number	Checked, no match	—	value_domain_read card=161 nonnull=589 null=0 smallest=0.1 largest=25.4 top[8 of 20]={0.4×16; 1.8×15; 0.8×14	—
grade_level Grade Level	Text	Understood	category.classification Publisher classification	value_profile card=2 nonnull=2610 null=0 smallest=HS Core largest=MS Core top[2]={MS Core×1507; HS Core×1103}	—
class_size Class Size	Text	Checked, no match	—	value_domain_read card=33 nonnull=2701 null=0 smallest=10 largest=9 top[8 of 20]={15×139; <15×111; 30×110; 27×109; >34×108	—
number_of_classes Number of Classes	Number	Checked, no match	—	value_domain_read card=197 nonnull=2610 null=0 smallest=1 largest=472 top[8 of 20]={1×224; 2×145; 3×113	—
number_of_students Number of Students	Number	Nobody has looked	—	—	—