How many institutions, students and teachers are held by tier, how do girls' shares differ, and where are institutions few relative to school-age residents?

Education. Part of what the twin can answer. Every figure below is the value the route serves, with its source; the raw response is at /api/twin/brain/education.

Descriptive, sourced: no model

Basis: sourced records (URL, sha256 or locator per row), no model.

Students per teacher = students / teachers; girls' share = girls / students * 100. Ratios use unrounded source counts and are rounded to two decimals.

As of: Primary: 2022; Post primary: 2023.

Students per teacher, College Education, 2023: 41.6; BANBEIS Bangladesh Education Statistics 2023, A1 and B1 (DPE APSC 2022), p. 26, printed line "Total 3341 111327 30478 27.38 4631126 2337269 50.47 42 1386 33", sha 89b409c5c370
Students per teacher, Technical-Vocational (Independent), 2023: 19.92; BANBEIS Bangladesh Education Statistics 2023, A1 and B1 (DPE APSC 2022), p. 26, printed line "Total 2547 34621 8808 25.44 689745 189654 27.50 20 271 14", sha 89b409c5c370
Girls' share of students, Secondary School Education, 2023: 55.05%; BANBEIS Bangladesh Education Statistics 2023, A1 and B1 (DPE APSC 2022), p. 26, printed line "Total 18968 246784 73038 29.60 8166188 4495673 55.05 33 431 13", sha 89b409c5c370
Girls' share of students, University Education, 2023: 37.47%; BANBEIS Bangladesh Education Statistics 2023, A1 and B1 (DPE APSC 2022), p. 26, printed line "Total 171 32917 9583 29.11 1069579 400738 37.47 32 6255 192", sha 89b409c5c370
Listed post-primary institutions per 100,000 residents aged 5 and over: fewest, Dhaka: 9.33; admin units
Listed post-primary institutions per 100,000 residents aged 5 and over: most of the ten fewest, Gazipur: 16.73; admin units

Institutions, students and teachers by tier

Every tier the 2023 statistics and the 2022 primary census hold

Tier	Year	Institutions	Students	Girls' share	Teachers	Students per teacher	Women teachers
College Education	Year: 2023	Institutions:

Districts with the fewest institutions per resident

Numerator is the undated third-party EIIN list (post-primary only, no primary schools); denominator is all residents aged 5 and over. The ranking shows where listed post-primary institutions are few per resident; it is not the school-age measure.

The ten districts with the fewest listed institutions per 100,000 residents aged 5 and over

Rank, fewest first	District	Listed post-primary institutions	Residents aged 5 and over	Per 100,000
1	District: Dhaka

The bodies behind the schools

Registry bodies

Body	Registry id
Ministry of Education	Registry id: 5
Secondary and Higher Education Division	Registry id: 53
Technical and Madrasa Education Division	Registry id: 54

Not held

School age ranking: The census data served by the people brain hold students by age band, not residents by age band; admin_units holds administrative identities only. No school-age resident denominator is available from either source. Enrolled students are not substituted; residents aged 5 and over are ranked separately under their own name.
Primary: Primary schools are outside the EIIN list's coverage.
School age density: The census data served by the people brain hold students by age band, not residents by age band; admin_units holds administrative identities only. No school-age resident denominator is available from either source. Enrolled students are not substituted; residents aged 5 and over are ranked separately under their own name.

Caveats

Numerator is the undated third-party EIIN list (post-primary only, no primary schools); denominator is all residents aged 5 and over. The ranking shows where listed post-primary institutions are few per resident; it is not the school-age measure.
Primary covers pre-primary through grade V, all school types, in 2022 (APSC), not just government schools. Post-primary figures are 2023 (BANBEIS).
A1's secondary category includes junior secondary schools; its school-and-college category combines both sections. College Education here excludes that combined category. Do not add a school's combined and separate section counts.
Primary includes sections attached to high schools and madrasahs. Tier institution counts are not added to a unique national total.
Technical-vocational covers independent institutions only; madrasah figures exclude attached Ebtedayee pupils. Ratios describe enrolment and teachers, not a sanctioned teacher gap.
District counts reuse the services brain's undated third-party EIIN copy. Primary schools are absent; no district all-tier census is claimed.

Sources

All 64 districts

District	Listed post-primary	Residents aged 5 and over	Per 100,000	Rank, fewest first
Bagerhat	Listed post-primary: 570	Residents aged 5 and over: 1,469,573	Per 100,000: 38.79	Rank, fewest first: 59
Bandarban	Listed post-primary: 77	Residents aged 5 and over: 426,433	Per 100,000: 18.06	Rank, fewest first: 16
Barguna	Listed post-primary: 352	Residents aged 5 and over: 921,567	Per 100,000: 38.2	Rank, fewest first: 58
Barisal	Listed post-primary: 818	Residents aged 5 and over: 2,334,868	Per 100,000: 35.03	Rank, fewest first: 53
Bhola	Listed post-primary: 561	Residents aged 5 and over: 1,710,803	Per 100,000: 32.79	Rank, fewest first: 49
Bogra	Listed post-primary: 957	Residents aged 5 and over: 3,430,098	Per 100,000: 27.9	Rank, fewest first: 37
Brahmanbaria	Listed post-primary: 404	Residents aged 5 and over: 2,916,025	Per 100,000: 13.85	Rank, fewest first: 5
Chandpur	Listed post-primary: 557	Residents aged 5 and over: 2,363,224	Per 100,000: 23.57	Rank, fewest first: 27
Chapai Nababganj	Listed post-primary: 465	Residents aged 5 and over: 1,643,319	Per 100,000: 28.3	Rank, fewest first: 38
Chittagong	Listed post-primary: 1,278	Residents aged 5 and over: 8,306,021	Per 100,000: 15.39	Rank, fewest first: 6
Chuadanga	Listed post-primary: 218	Residents aged 5 and over: 1,132,828	Per 100,000: 19.24	Rank, fewest first: 18
Comilla	Listed post-primary: 1,184	Residents aged 5 and over: 5,541,410	Per 100,000: 21.37	Rank, fewest first: 21
Cox's Bazar	Listed post-primary: 381	Residents aged 5 and over: 2,475,197	Per 100,000: 15.39	Rank, fewest first: 7
Dhaka	Listed post-primary: 1,271	Residents aged 5 and over: 13,622,744	Per 100,000: 9.33	Rank, fewest first: 1
Dinajpur	Listed post-primary: 1,145	Residents aged 5 and over: 3,023,525	Per 100,000: 37.87	Rank, fewest first: 57
Faridpur	Listed post-primary: 398	Residents aged 5 and over: 1,952,283	Per 100,000: 20.39	Rank, fewest first: 19
Feni	Listed post-primary: 367	Residents aged 5 and over: 1,486,881	Per 100,000: 24.68	Rank, fewest first: 32
Gaibandha	Listed post-primary: 725	Residents aged 5 and over: 2,313,988	Per 100,000: 31.33	Rank, fewest first: 46
Gazipur	Listed post-primary: 810	Residents aged 5 and over: 4,842,543	Per 100,000: 16.73	Rank, fewest first: 10
Gopalganj	Listed post-primary: 284	Residents aged 5 and over: 1,169,398	Per 100,000: 24.29	Rank, fewest first: 30
Habiganj	Listed post-primary: 287	Residents aged 5 and over: 2,102,278	Per 100,000: 13.65	Rank, fewest first: 4
Jamalpur	Listed post-primary: 663	Residents aged 5 and over: 2,261,349	Per 100,000: 29.32	Rank, fewest first: 42
Jessore	Listed post-primary: 994	Residents aged 5 and over: 2,814,887	Per 100,000: 35.31	Rank, fewest first: 54
Jhalokati	Listed post-primary: 355	Residents aged 5 and over: 599,733	Per 100,000: 59.19	Rank, fewest first: 64
Jhenaidah	Listed post-primary: 496	Residents aged 5 and over: 1,834,705	Per 100,000: 27.03	Rank, fewest first: 34
Joypurhat	Listed post-primary: 329	Residents aged 5 and over: 884,746	Per 100,000: 37.19	Rank, fewest first: 55
Khagrachhari	Listed post-primary: 142	Residents aged 5 and over: 640,987	Per 100,000: 22.15	Rank, fewest first: 23
Khulna	Listed post-primary: 704	Residents aged 5 and over: 2,398,034	Per 100,000: 29.36	Rank, fewest first: 43
Kishoregonj	Listed post-primary: 501	Residents aged 5 and over: 2,901,837	Per 100,000: 17.26	Rank, fewest first: 12
Kurigram	Listed post-primary: 700	Residents aged 5 and over: 2,102,235	Per 100,000: 33.3	Rank, fewest first: 51
Kushtia	Listed post-primary: 463	Residents aged 5 and over: 1,964,488	Per 100,000: 23.57	Rank, fewest first: 26
Lakshmipur	Listed post-primary: 364	Residents aged 5 and over: 1,718,261	Per 100,000: 21.18	Rank, fewest first: 20
Lalmonirhat	Listed post-primary: 370	Residents aged 5 and over: 1,291,110	Per 100,000: 28.66	Rank, fewest first: 40
Madaripur	Listed post-primary: 273	Residents aged 5 and over: 1,164,698	Per 100,000: 23.44	Rank, fewest first: 25
Magura	Listed post-primary: 300	Residents aged 5 and over: 936,445	Per 100,000: 32.04	Rank, fewest first: 48
Manikganj	Listed post-primary: 234	Residents aged 5 and over: 1,430,721	Per 100,000: 16.36	Rank, fewest first: 9
Maulvibazar	Listed post-primary: 329	Residents aged 5 and over: 1,922,278	Per 100,000: 17.12	Rank, fewest first: 11
Meherpur	Listed post-primary: 180	Residents aged 5 and over: 652,818	Per 100,000: 27.57	Rank, fewest first: 36
Munshiganj	Listed post-primary: 197	Residents aged 5 and over: 1,477,402	Per 100,000: 13.33	Rank, fewest first: 3
Mymensingh	Listed post-primary: 1,179	Residents aged 5 and over: 5,285,501	Per 100,000: 22.31	Rank, fewest first: 24
Naogaon	Listed post-primary: 869	Residents aged 5 and over: 2,564,212	Per 100,000: 33.89	Rank, fewest first: 52
Narail	Listed post-primary: 204	Residents aged 5 and over: 712,453	Per 100,000: 28.63	Rank, fewest first: 39
Narayanganj	Listed post-primary: 338	Residents aged 5 and over: 3,563,324	Per 100,000: 9.49	Rank, fewest first: 2
Narsingdi	Listed post-primary: 418	Residents aged 5 and over: 2,322,802	Per 100,000: 18	Rank, fewest first: 15
Natore	Listed post-primary: 561	Residents aged 5 and over: 1,704,623	Per 100,000: 32.91	Rank, fewest first: 50
Netrakona	Listed post-primary: 444	Residents aged 5 and over: 2,072,005	Per 100,000: 21.43	Rank, fewest first: 22
Nilphamari	Listed post-primary: 548	Residents aged 5 and over: 1,883,521	Per 100,000: 29.09	Rank, fewest first: 41
Noakhali	Listed post-primary: 576	Residents aged 5 and over: 3,203,870	Per 100,000: 17.98	Rank, fewest first: 14
Pabna	Listed post-primary: 626	Residents aged 5 and over: 2,642,233	Per 100,000: 23.69	Rank, fewest first: 28
Panchagarh	Listed post-primary: 395	Residents aged 5 and over: 1,055,587	Per 100,000: 37.42	Rank, fewest first: 56
Patuakhali	Listed post-primary: 658	Residents aged 5 and over: 1,561,522	Per 100,000: 42.14	Rank, fewest first: 61
Pirojpur	Listed post-primary: 512	Residents aged 5 and over: 1,088,987	Per 100,000: 47.02	Rank, fewest first: 63
Rajbari	Listed post-primary: 269	Residents aged 5 and over: 1,080,124	Per 100,000: 24.9	Rank, fewest first: 33
Rajshahi	Listed post-primary: 1,074	Residents aged 5 and over: 2,677,805	Per 100,000: 40.11	Rank, fewest first: 60
Rangamati	Listed post-primary: 179	Residents aged 5 and over: 589,469	Per 100,000: 30.37	Rank, fewest first: 44
Rangpur	Listed post-primary: 878	Residents aged 5 and over: 2,882,402	Per 100,000: 30.46	Rank, fewest first: 45
Satkhira	Listed post-primary: 640	Residents aged 5 and over: 2,008,366	Per 100,000: 31.87	Rank, fewest first: 47
Shariatpur	Listed post-primary: 203	Residents aged 5 and over: 1,158,304	Per 100,000: 17.53	Rank, fewest first: 13
Sherpur	Listed post-primary: 366	Residents aged 5 and over: 1,349,279	Per 100,000: 27.13	Rank, fewest first: 35
Sirajganj	Listed post-primary: 744	Residents aged 5 and over: 3,036,732	Per 100,000: 24.5	Rank, fewest first: 31
Sunamganj	Listed post-primary: 383	Residents aged 5 and over: 2,390,365	Per 100,000: 16.02	Rank, fewest first: 8
Sylhet	Listed post-primary: 645	Residents aged 5 and over: 3,470,115	Per 100,000: 18.59	Rank, fewest first: 17
Tangail	Listed post-primary: 876	Residents aged 5 and over: 3,694,349	Per 100,000: 23.71	Rank, fewest first: 29
Thakurgaon	Listed post-primary: 609	Residents aged 5 and over: 1,389,920	Per 100,000: 43.82	Rank, fewest first: 62