How many secondary schools, teachers and students are held by district and division, what are girls' shares and pupil-teacher ratios, what facilities do schools have, and which districts lag most?

Secondary schools. 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/schools.

Descriptive, sourced: no model

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

Pupil-teacher ratio = students / teachers; girls' share = girls / students * 100; female-teacher share = female / teachers * 100. Ratios use unrounded source counts, rounded to two decimals; printed percentages ride beside them.

As of: Districts: 2023; Trend: 1995-2023; Infrastructure: 2023.

Secondary schools, 2023: 21,086; schools trend secondary, Table 3.1.1, printed line "2023 21086 278518 85751 30.79 9405785 5157876 54.84", sha 89b409c5c370
Students on the roll, 2023: 9,405,785; schools trend secondary, Table 3.1.1, printed line "2023 21086 278518 85751 30.79 9405785 5157876 54.84", sha 89b409c5c370
Lowest divisional pupil-teacher ratio, Rangpur: 27.04; schools division 2023, Table 3.1.9, printed line "Division Total: 3327 752 44016 11216 25.48 1190011 647644 54.42", sha 89b409c5c370
Highest district pupil-teacher ratio, Sunamganj: 52.48
Girls share of secondary students, national: 54.84%; schools division 2023, Table 3.1.9, printed line "National Total 21086 3285 278518 85751 30.79 9405785 5157876 54.84", sha 89b409c5c370

Secondary schooling by division, 2023

Divisions: counts, girls shares and pupil-teacher ratios

Division	Schools	Teachers	Students	Girls share	Pupil-teacher ratio	Source
Barishal	Schools: 1,735	Teachers: 18,647

Secondary schooling by district, 2023

Districts: counts, girls shares and pupil-teacher ratios

District	Schools	Teachers	Students	Girls share	Pupil-teacher ratio	Source
Barguna	Schools: 190	Teachers: 1,919

Districts that lag most

Highest pupil-teacher ratios

Rank	District	Pupils per teacher
1	District: Sunamganj	Pupils per teacher: 52.48
2	District: Brahamanbaria

Secondary schooling, 1995 to 2023 (2007 is not printed)

National totals by school year

Year	Schools	Teachers	Enrolment	Girls share	Source
1995	Schools: 12,012	Teachers: 140,059	Enrolment: 5,115,461

Facilities by school type, 2023

Which schools have electricity, water, toilets, computers and internet

Type	Facility	Schools with it	Share	Source
All	Facility: Computer facility	Schools with it: 17,999	Share: 88.02%	schools infra 2023, Table 3.5.2, sha 89b409c5c370

Caveats

Secondary schools only (junior secondary, secondary, school-and-college school sections, upgraded government primary sections attached to secondaries). Primary, madrasah, technical and university tiers are the education brain's.
Facility tables exclude upgraded government primary schools (printed N.B.); their All total is 20,448 against 21,086 schools above.
The 2007 school year is not printed in the trend table; no value is filled.
Enrolment is students on the roll, not attendance; ratios describe staffing, not a sanctioned teacher gap.

Rank	District	Girls share
1	District: Netrakona	Girls share: 49.46%
2	District: Jamalpur	Girls share: 51.61%
3	District: Tangail	Girls share: 52.01%
4	District: Gopalganj	Girls share: 52.05%
5	District: Naogaon	Girls share: 52.06%

Rank	District	Female-teacher share
1	District: Bhola	Female-teacher share: 20.42%
2	District: Sunamganj	Female-teacher share: 20.76%
3	District: Bandarban	Female-teacher share: 20.97%
4	District: Satkhira	Female-teacher share: 21.73%
5	District: Kurigram	Female-teacher share: 21.79%