schema_version int64 | academic_year int64 | generated_at timestamp[s] | embedding_model string | embedding_dim int64 | packs list | coverage dict |
|---|---|---|---|---|---|---|
1 | 2,026 | 2026-10-06T12:22:21 | intfloat/multilingual-e5-small | 384 | [
{
"id": "general_class-1_bn",
"file": "general_class-1_bn.db",
"title": "Class 1 · General · Bangla version",
"stream": "general",
"stream_bn": "সাধারণ",
"class": "class-1",
"version": "bn",
"has_embeddings": true,
"books": 3,
"chunks": 131,
"size_bytes": 540672,
"sha... | {
"complete": false,
"catalog_book_entries": 272,
"included_book_entries": 266,
"missing_unique_books": 4,
"missing_books": [
{
"pack_id": "hsc_class-11-12_bn",
"title": "সহপাঠ",
"file_key": "gd_1-uzjMdBX2dDj9OJoBZMdUhG3kNyCxOWS"
},
{
"pack_id": "hsc_class-11-12_en",
... |
NCTB curriculum knowledge packs (2026)
Text extracted from the textbooks published by the National Curriculum and Textbook Board (NCTB), Bangladesh, at nctb.gov.bd, split into retrieval chunks for an offline on-device study assistant. One SQLite file per class, stream and version.
The textbook content belongs to NCTB. This repository redistributes it in processed form for free educational use.
| File | Pack | Books | Chunks | Size |
|---|---|---|---|---|
general_class-1_bn.db |
Class 1 · General · Bangla version | 3 | 131 | 0.5 MB |
general_class-1_en.db |
Class 1 · General · English version | 3 | 150 | 0.6 MB |
general_class-2_bn.db |
Class 2 · General · Bangla version | 3 | 217 | 0.9 MB |
general_class-2_en.db |
Class 2 · General · English version | 3 | 238 | 1.0 MB |
general_class-3_bn.db |
Class 3 · General · Bangla version | 9 | 1228 | 5.1 MB |
general_class-3_en.db |
Class 3 · General · English version | 9 | 1576 | 6.5 MB |
general_class-4_bn.db |
Class 4 · General · Bangla version | 9 | 1491 | 6.2 MB |
general_class-4_en.db |
Class 4 · General · English version | 9 | 2059 | 8.3 MB |
general_class-5_bn.db |
Class 5 · General · Bangla version | 9 | 1818 | 7.6 MB |
general_class-5_en.db |
Class 5 · General · English version | 9 | 2307 | 9.5 MB |
general_class-6_bn.db |
Class 6 · General · Bangla version | 22 | 4701 | 19.5 MB |
general_class-6_en.db |
Class 6 · General · English version | 22 | 5611 | 23.1 MB |
general_class-7_bn.db |
Class 7 · General · Bangla version | 22 | 5587 | 23.2 MB |
general_class-7_en.db |
Class 7 · General · English version | 22 | 6613 | 27.2 MB |
general_class-8_bn.db |
Class 8 · General · Bangla version | 22 | 6450 | 26.7 MB |
general_class-8_en.db |
Class 8 · General · English version | 22 | 7458 | 30.7 MB |
general_class-9-10_bn.db |
Class 9-10 · General · Bangla version | 33 | 18642 | 77.4 MB |
general_class-9-10_en.db |
Class 9-10 · General · English version | 33 | 21486 | 88.7 MB |
hsc_class-11-12_bn.db |
Class 11-12 · HSC · Bangla version | 1 | 1138 | 4.8 MB |
hsc_class-11-12_en.db |
Class 11-12 · HSC · English version | 1 | 1138 | 4.8 MB |
Format
meta, books, chunks tables. chunks.embedding is a 384-dim
float32 little-endian L2-normalised vector from intfloat/multilingual-e5-small,
computed on "passage: " + text; embed questions as "query: " + question and normalise.
manifest.json lists every pack with its size and SHA-256.
Coverage
This release includes 219 of 223 unique textbooks (266 of 272 catalog book entries). All general-school packs are complete. The HSC packs are partial because Google Drive download quotas blocked the following books.
| Pack | Missing book |
|---|---|
hsc_class-11-12_bn |
সহপাঠ |
hsc_class-11-12_en |
সহপাঠ |
hsc_class-11-12_bn |
English for Today |
hsc_class-11-12_en |
English for Today |
hsc_class-11-12_bn |
তথ্য ও যোগাযোগ প্রযুক্তি |
hsc_class-11-12_en |
তথ্য ও যোগাযোগ প্রযুক্তি (ইংলিশ ভার্সন) |
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