Schools Division of Ilocos Sur

By Mark Anthony Llego · Published 1 November 2026 · Updated 3 November 2026

SY 2024-25 data from DepEd as of 25 October 2025

Summary

Ilocos Sur has the fourth most learners of the 14 schools divisions in Region I, and the 13th most learners per teacher in public schools. In SY 2024-25 its 554 schools held 116,895 learners, with another 1,602 in ALS, and its public schools had 5,326 teachers. Enrollment in schools fell 4.0% from SY 2023-24, not counting ALS: public schools fell 4.2%, private schools fell 0.7% and SUC and LUC schools fell 27.9%.

Of the 505 reporting public schools, all have electricity, but 81, or 16%, have no internet, against 11% in Region I. Leaving out three schools whose figures are under review, the most crowded public classrooms are at Paoc Integrated School, with one classroom for every 90 learners.

The page lists its 23 districts, and it shows the figures by sector and level in charts and tables.

Schools: 554; No change from SY 2023-24; 506 public, 44 private, 4 SUCs and LUCs
Community learning centers: 158; Up 20 from SY 2023-24
Learners: 118,497; Down 4,511 from SY 2023-24
Teachers: 5,326; Down 78 from SY 2023-24
Classrooms: 4,700; Down 10 from SY 2023-24

Key findings

For SY 2024-25 and all schools, whatever is chosen above.

Ilocos Sur has the 4th most learners of the 14 schools divisions in Region I, and the 13th most learners per teacher in public schools.
Enrollment in schools fell 4.0% from SY 2023-24 (ALS not counted); public schools fell 4.2%, private schools fell 0.7% and SUC and LUC schools fell 27.9%.
Of the learners in schools, 88% are in public schools (85% nationally), 11% in private schools (14% nationally) and 1% in SUC and LUC schools (1% nationally).
The largest schools are Narvacan National Central High School (3,894 learners), Sinait National High School (3,199 learners) and Tagudin National High School (2,943 learners).
Enrollment grew fastest at Great Heights Learning Center of Ilocos Sur, Inc. (+31%) and fell most at Manzante National High School (−25%), among schools with 100 or more learners in both years.
Leaving out 3 schools whose figures are under review, the most crowded public classrooms are at Paoc Integrated School, with 90 learners per classroom.
Of the 505 reporting public schools, all have electricity; 4 (1%) have no water, against 1% in Region I; 81 (16%) have no internet, against 11% in Region I.
The 504 public schools here with FY 2025 MOOE received ₱374.5 million. Across the 501 with FY 2024 MOOE and SY 2024-25 learners, FY 2024 MOOE came to ₱2,580 for each learner.

Learners

SY 2024-25: 118,497 learners, 116,895 in schools and 1,602 in community learning centers.

Learners, SY 2024-25
Learners	Number
All learners	118,497
In schools	116,895
In community learning centers (ALS)	1,602
Male	61,352
Female	56,809
Not broken down by sex	336

Learners by level and sector, SY 2024-25: at least these numbers

Learners by level and sector, SY 2024-25: at least these numbers; 336 not broken down by level
Level	Public schools	Private schools	SUCs and LUCs	Community learning centers (ALS)	Total
Elementary	60,852	2,645	0	0	63,497
Junior High School	28,311	7,093	300	0	35,704
Senior High School	13,765	3,314	281	0	17,360
ALS Basic Literacy Program	0	0	0	36	36
ALS A&E elementary	0	0	0	161	161
ALS A&E secondary	0	0	0	1,403	1,403

Learners by grade and sex, SY 2024-25: at least these numbers

Learners by grade and sex, SY 2024-25: at least these numbers; 336 not broken down by grade
Grade	Male	Female	Total
Kindergarten	3,752	3,456	7,208
Grade 1	4,388	3,928	8,316
Grade 2	4,454	4,060	8,514
Grade 3	4,800	4,338	9,138
Grade 4	5,271	5,081	10,352
Grade 5	4,389	4,022	8,411
Grade 6	5,830	5,457	11,287
Grade 7	5,259	4,766	10,025
Grade 8	4,034	3,627	7,661
Grade 9	4,486	4,449	8,935
Grade 10	4,576	4,501	9,077
Grade 11	4,559	4,352	8,911
Grade 12	4,352	4,097	8,449
Special needs, non-graded (elementary)	179	92	271
Special needs, non-graded (junior high)	3	3	6
ALS Basic Literacy Program	18	18	36
ALS A&E elementary	105	56	161
ALS A&E secondary	897	506	1,403
Broken down by grade	61,352	56,809	118,161

Senior High School learners by track, SY 2024-25

Senior High School learners by track, SY 2024-25
Track	Learners
Academic	14,181
Technical-Vocational-Livelihood	3,382
All tracks	17,563

ALIVE (Arabic Language and Islamic Values Education) learners by level and sex, SY 2024-25
Level	Male	Female	Total
Kindergarten	5	3	8
Elementary	25	12	37
Junior High School	0	1	1
All	30	16	46

Indigenous peoples (IP) learners by level and sex, SY 2024-25
Level	Male	Female	Total
Kindergarten	579	537	1,116
Elementary	4,967	4,605	9,572
Junior High School	2,861	2,656	5,517
Senior High School	1,152	1,038	2,190
All	9,559	8,836	18,395

Learners in alternative delivery modes (ADM) by program and sex, SY 2024-25
Program	Male	Female	Total
Distance Education	0	1	1
Enhanced-Instructional Management by Parents, Community and teachers	65	66	131
Modified In-School Off-School Approach	1	1	2
Other School-Initiated Intervention	135	125	260
All	201	193	394

Schools and community learning centers

SY 2024-25: 554 schools and 158 community learning centers.

Schools and community learning centers by sector, SY 2024-25

Schools and community learning centers by sector, SY 2024-25
Sector	Number
Public schools	506
Private schools	44
SUCs and LUCs	4
Community learning centers (ALS)	158
All	712

Schools by curricular offering, SY 2024-25

Schools by curricular offering, SY 2024-25
Offering	Number
Elementary only	437
Elementary and junior high (K to 10)	19
Kindergarten to Grade 12	25
Junior high only	2
Junior and senior high	69
Senior high only	2
Community learning centers (ALS)	158

Schools by subclassification, SY 2024-25
Subclassification	Number
DepEd managed	505
Community learning centers (ALS)	158
Sectarian	36
Non-sectarian	8
State universities and colleges	3
DOST managed	1
Local universities and colleges	1

School personnel

SY 2024-25: 5,326 teachers and 989 non-teaching personnel in public schools.

Public school personnel by type, SY 2024-25
Type	Number
Teachers	5,326
Non-teaching personnel	989
All personnel	6,315

Public school teachers by level, SY 2024-25

Public school teachers by level, SY 2024-25
Level	Teachers
Elementary	3,388
Junior High School	1,381
Senior High School	557
All teachers	5,326

Learners per teacher by level, public schools, SY 2024-25

Learners per teacher by level, public schools, SY 2024-25
Level	Learners per teacher
Elementary	18.0
Junior High School	20.5
Senior High School	24.7

School resources

SY 2024-25: 4,700 classrooms and 7,651 toilets in public schools.

Classrooms: 4,700
Seats (approximate): 99,823
Toilets: 7,651
Functional computers: 10,367
Faucets: 19,469; 18,495 with water

Classrooms, seats, toilets and computers by level, public schools, SY 2024-25: shares of each by level

Classrooms, seats, toilets and computers by level, public schools, SY 2024-25, with learners per resource
Measure	Elementary	Junior High School	Senior High School
Classrooms	3,435	829	436
Learners per classroom	17.7	34.2	31.6
Seats (approximate)	66,020	22,543	11,260
Learners per seat	0.9	1.3	1.2
Toilets	5,956	1,132	563
Learners per toilet	10.2	25.0	24.5
Functional computers	4,690	3,901	1,776
Learners per computer	13.0	7.3	7.8

Public schools with a water supply, by level, SY 2024-25

Public schools with a water supply, by level, SY 2024-25: number of schools
Level	With water supply	Without
Elementary	448	4
Junior High School	84	0
Senior High School	63	4

Public schools by electricity supply and level, SY 2024-25

Public schools by electricity supply and level, SY 2024-25: number of schools
Level	Grid supply	Grid and off-grid supply
Elementary	440	12
Junior High School	84	0
Senior High School	67	0

Public schools with internet access, by level, SY 2024-25

Public schools with internet access, by level, SY 2024-25: number of schools
Level	With internet access	Without
Elementary	373	79
Junior High School	76	8
Senior High School	54	13

Toilets in public schools by type, SY 2024-25

Toilets in public schools by type, SY 2024-25
Type	Toilets
Female	1,540
Male	1,424
Shared	4,482
For persons with disabilities	205
All toilets	7,651

Faucets in public schools, with and without water, SY 2024-25

Faucets in public schools, with and without water, SY 2024-25
Faucets	Number
With water	18,495
Without water	974
All faucets	19,469

Public schools with each facility, SY 2024-25
Facility	Schools
Entrance Gate	474
School Garden	465
Playground	398
Offices	377
Exit Gate	353
Covered Court	312
Temporary Perimeter Fence	296
Canteen	272
Permanent Perimeter Fence	224
Computer Room	212
Home Economic Room	198
Clinic	194
Library/Learning Resource Center	187
Paved Pathway	135
Supply Room	101
Faculty Room	99
Conference Room	80
Science Laboratory	71
Industrial Arts Room	56
Roofing	50
Solar Panel	47
Data File Room/Records Room	45
Museum	25
Flood Marker	18
Student Co-Curricular Center	14
Youth Development Center	12
Bike Rack	5
Gymnasium	3
Speech Laboratory	3

Districts

23 districts, each with its SY 2024-25 schools and learners in every sector.

Districts in SDO Ilocos Sur, SY 2024-25
Name	Schools	Learners	Teachers (public)	Learners per teacher (public)
Alilem-Sugpon	26	2,471	153	13.3
Banayoyo-Lidlidda-San Emilio	28	3,606	223	15.8
Bantay	23	6,230	225	20.5
Burgos-San Esteban	16	3,827	186	19.7
Cabugao	32	7,796	317	21.4
Caoayan	15	2,335	154	15.2
Cervantes-Quirino	45	6,397	304	18.3
Magsingal	25	6,133	244	22.1
Narvacan North	21	3,258	174	18.7
Narvacan South-Nagbukel	28	8,133	367	20.9
Salcedo-Galimuyod-Sigay-Del Pilar	48	4,779	315	14.1
San Juan	27	5,711	271	19.9
San Vicente	9	2,717	117	19.3
Santa	13	2,359	135	17.5
Santiago	14	3,425	141	22.1
Sinait	20	6,069	295	20.5
Sta. Catalina	9	1,825	84	20.4
Sta. Cruz	31	7,732	243	22.8
Sta. Lucia	19	6,729	227	20.0
Sta. Maria	25	6,266	276	20.6
Sto. Domingo-San Ildefonso	29	7,192	304	21.5
Suyo	22	2,066	167	12.4
Tagudin	29	9,839	404	21.5

District totals exclude ALS centers, which DepEd does not assign to districts.

About this data

336 learners in SY 2024-25 are counted in the totals but not broken down by grade, level or sex, so those charts show at least these numbers.
Teachers, classrooms and facilities are for public schools only: DepEd's public report has them for no other schools.

District totals exclude ALS centers, which DepEd does not assign to districts.

Each school year's figures for the Schools Division of Ilocos Sur count the schools DepEd placed there that year. Figures come from DepEd's school data for SY 2023-24 and SY 2024-25 as of 25 October 2025. How the data was checked

Report a correction to the figures for the Schools Division of Ilocos Sur