Top 100 largest schools in South Australia (2025)

Schools with the highest total enrolments. Ordered by the measure shown, with the Success Index for context; 100 schools shown out of all eligible largest schools in South Australia.

#	School	Sector	Students	Success Index	ICSEA	Students	Students : teacher
1	Open Access College Marden · Combined · U, R-12	Government	4,028	44.7 Lower 50%	1017	4,028	10.8
2	Nazareth Catholic College Flinders Park · Combined · R-12	Catholic	2,576	53.8 Top 50%	1049	2,576	13.2
3	Xavier College Gawler Belt · Combined · R-12	Catholic	2,532	38.2 Lower 50%	1001	2,532	14.0
4	Glenunga International High School Glenunga · Secondary · 7-12	Government	2,340	80.9 Top 5%	1153	2,340	14.9
5	Cardijn College Noarlunga Downs · Combined · R-12	Catholic	2,247	44.1 Lower 50%	1019	2,247	13.2
6	St Michael's College Henley Beach · Combined · R-12	Catholic	2,193	52.8 Top 50%	1064	2,193	13.2
7	Sacred Heart College Somerton Park · Combined · 7-12	Catholic	2,033	64.4 Top 50%	1083	2,033	13.1
8	Reynella East College Reynella East · Combined · U, R-12	Government	1,938	32.6 Lower 50%	988	1,938	14.8
9	Adelaide High School Adelaide · Secondary · U, 7-12	Government	1,821	71.7 Top 25%	1094	1,821	14.3
10	The Heights School Modbury Heights · Combined · U, R-12	Government	1,811	56.4 Top 50%	1060	1,811	16.0
11	Marryatville High School Marryatville · Secondary · 7-12	Government	1,759	79.3 Top 10%	1120	1,759	15.0
12	Brighton Secondary School North Brighton · Secondary · 7-12	Government	1,737	65.0 Top 50%	1071	1,737	15.5
13	Mark Oliphant College (B-12) Munno Para West · Combined · U, R-12	Government	1,685	23.2 Lower 50%	919	1,685	12.3
14	Pembroke School Kensington Park · Combined · R-12	Independent	1,672	80.7 Top 10%	1171	1,672	9.5
15	Norwood International High School Magill · Secondary · 7-12	Government	1,667	74.5 Top 25%	1090	1,667	15.4
16	Roma Mitchell Secondary College Gepps Cross · Secondary · U, 7-12	Government	1,638	40.6 Lower 50%	971	1,638	13.0
17	St Peter's College St Peters · Combined · R-12	Independent	1,585	83.2 Top 5%	1164	1,585	10.4
18	Tenison Woods College Mount Gambier · Combined · R-12	Catholic	1,552	50.9 Top 50%	1031	1,552	12.3
19	Unley High School Netherby · Secondary · 7-12	Government	1,547	68.2 Top 25%	1084	1,547	14.4
20	Woodcroft College Morphett Vale · Combined · R-12	Independent	1,534	54.3 Top 50%	1071	1,534	14.4
21	St Columba College Andrews Farm · Combined · R-12	Catholic	1,519	29.0 Lower 50%	973	1,519	13.0
22	Tyndale Christian School Salisbury East · Combined · R-12	Independent	1,498	41.8 Lower 50%	1016	1,498	12.9
23	Golden Grove High School Golden Grove · Secondary · U, 7-12	Government	1,486	43.4 Lower 50%	1007	1,486	13.0
24	Saint Ignatius' College Athelstone · Combined · R-12	Catholic	1,421	77.6 Top 10%	1151	1,421	11.2
25	Westminster School Marion · Combined · R-12	Independent	1,401	77.8 Top 10%	1139	1,401	10.5
26	Riverbanks College B-12 Angle Vale · Combined · U, R-12	Government	1,393	26.0 Lower 50%	955	1,393	13.2
27	Henley High School Henley Beach · Secondary · U, 7-12	Government	1,381	57.4 Top 50%	1045	1,381	13.8
28	Seaview High School Seacombe Heights · Secondary · U, 7-12	Government	1,377	61.3 Top 50%	1038	1,377	15.3
29	Paralowie School Paralowie · Combined · R-12	Government	1,373	18.6 Lower 50%	909	1,373	13.9
30	Eastern Fleurieu R-12 School Strathalbyn · Combined · U, R-12	Government	1,332	29.3 Lower 50%	981	1,332	13.4
31	Playford International College Elizabeth · Secondary · U, 7-12	Government	1,322	17.6 Lower 50%	881	1,322	11.9
32	Concordia College Highgate · Combined · R-12	Independent	1,312	73.9 Top 25%	1140	1,312	12.2
33	Thebarton Senior College Torrensville · Secondary · U, 11-12	Government	1,284	37.1 Lower 50%	951	1,284	10.3
34	King's Baptist Grammar School Wynn Vale · Combined · R-12	Independent	1,280	56.5 Top 50%	1090	1,280	14.4
35	Parafield Gardens High School Parafield Gardens · Secondary · U, 7-12	Government	1,277	21.1 Lower 50%	928	1,277	13.8
36	Adelaide Botanic High School Adelaide · Secondary · 7-12	Government	1,258	75.1 Top 25%	1103	1,258	15.7
37	Gawler and District College B-12 Evanston · Combined · U, R-12	Government	1,247	21.0 Lower 50%	932	1,247	13.8
38	Craigmore High School Blakeview · Secondary · U, 7-12	Government	1,245	18.4 Lower 50%	916	1,245	13.2
39	Hallett Cove School Hallett Cove · Combined · R-12	Government	1,243	29.1 Lower 50%	999	1,243	15.0
40	Murray Bridge High School Murray Bridge · Secondary · U, 7-12	Government	1,228	21.4 Lower 50%	918	1,228	13.1
41	Scotch College Torrens Park · Combined · R-12	Independent	1,213	75.5 Top 25%	1146	1,213	11.0
42	Blackwood High School Eden Hills · Secondary · 7-12	Government	1,211	59.5 Top 50%	1059	1,211	16.3
43	Mount Carmel College Rosewater · Combined · R-12	Catholic	1,204	45.6 Lower 50%	1008	1,204	14.4
44	St Paul's College Gilles Plains · Combined · R-12	Catholic	1,191	56.6 Top 50%	1037	1,191	12.8
45	Charles Campbell College Paradise · Combined · U, R-12	Government	1,188	44.8 Lower 50%	1018	1,188	13.2
46	Kadina Memorial School Kadina · Combined · U, R-12	Government	1,184	33.7 Lower 50%	951	1,184	11.4
47	Immanuel College Novar Gardens · Secondary · 7-12	Independent	1,184	82.2 Top 5%	1117	1,184	9.7
48	Woodville High School St Clair · Secondary · U, 7-12	Government	1,170	41.2 Lower 50%	973	1,170	13.4
49	Cabra Dominican College Cumberland Park · Combined · 7-12	Catholic	1,165	50.5 Top 50%	1065	1,165	14.8
50	Temple Christian College Mile End · Secondary · 7-12	Independent	1,151	62.4 Top 50%	1043	1,151	12.6
51	Pedare Christian College Golden Grove · Combined · R-12	Independent	1,146	63.7 Top 50%	1097	1,146	13.5
52	Nuriootpa High School Nuriootpa · Secondary · U, 7-12	Government	1,133	39.5 Lower 50%	990	1,133	13.8
53	Thomas More College Salisbury Downs · Secondary · 7-12	Catholic	1,132	39.6 Lower 50%	973	1,132	11.8
54	Prince Alfred College Kent Town · Combined · R-12	Independent	1,127	78.0 Top 10%	1143	1,127	8.5
55	Mercedes College Springfield · Combined · R-12	Catholic	1,111	67.4 Top 25%	1133	1,111	12.0
56	Tatachilla Lutheran College Mclaren Vale · Combined · R-12	Independent	1,103	55.6 Top 50%	1068	1,103	12.5
57	Urrbrae Agricultural High School Netherby · Secondary · 7-12	Government	1,102	64.3 Top 50%	1074	1,102	13.7
58	St Aloysius College Adelaide · Combined · R-12	Catholic	1,091	59.5 Top 50%	1081	1,091	11.6
59	Emmaus Christian College South Plympton · Combined · R-12	Independent	1,084	72.4 Top 25%	1137	1,084	14.4
60	Mount Barker High School Mount Barker · Secondary · U, 7-12	Government	1,061	54.2 Top 50%	1010	1,061	14.4
61	Salisbury High School Salisbury North · Secondary · U, 7-12	Government	1,058	14.0 Lower 50%	907	1,058	13.4
62	Banksia Park International High School Banksia Park · Secondary · 7-12	Government	1,055	43.0 Lower 50%	1009	1,055	15.3
63	St Francis de Sales College Mount Barker · Combined · R-12	Catholic	1,047	54.7 Top 50%	1051	1,047	15.3
64	St John's Grammar School Belair · Combined · R-12	Independent	1,009	78.7 Top 10%	1141	1,009	12.3
65	Salisbury East High School Salisbury East · Secondary · U, 7-12	Government	1,008	22.5 Lower 50%	941	1,008	12.9
66	Whyalla Secondary College Whyalla Norrie · Secondary · U, 7-12	Government	1,004	7.6 Lower 50%	900	1,004	16.0
67	Pinnacle College Elizabeth East · Combined · R-12	Independent	993	58.5 Top 50%	1049	993	12.5
68	Christian Brothers College Adelaide · Combined · R-12	Catholic	990	61.2 Top 50%	1074	990	12.3
69	Rostrevor College Woodforde · Combined · R-12	Catholic	985	54.7 Top 50%	1064	985	13.6
70	Linden Park Primary School Linden Park · Primary · R-6	Government	981	78.3 Top 10%	1160	981	18.4
71	Grant High School Mount Gambier · Secondary · U, 7-12	Government	978	28.0 Lower 50%	954	978	14.0
72	Heathfield High School Heathfield · Secondary · 7-12	Government	970	73.0 Top 25%	1086	970	15.4
73	Trinity College Gawler River Angle Vale · Combined · R-10	Independent	970	41.4 Lower 50%	1032	970	16.3
74	Trinity College South Evanston South · Combined · R-10	Independent	957	45.7 Lower 50%	1039	957	15.5
75	St Mark's College Port Pirie · Combined · R-12	Catholic	945	36.1 Lower 50%	1002	945	14.1
76	Gleeson College Golden Grove · Secondary · 7-12	Catholic	941	68.3 Top 25%	1055	941	11.7
77	Modbury High School Modbury · Secondary · U, 7-12	Government	926	45.5 Lower 50%	1005	926	13.9
78	Hope Christian College Craigmore · Combined · R-12	Independent	921	27.9 Lower 50%	977	921	15.3
79	Seaton High School Seaton · Secondary · U, 7-12	Government	917	49.1 Lower 50%	1001	917	12.6
80	Wirreanda Secondary School Morphett Vale · Secondary · U, 7-12	Government	915	15.2 Lower 50%	913	915	13.1
81	Trinity College North Evanston South · Combined · R-10	Independent	914	42.9 Lower 50%	1040	914	15.6
82	Aberfoyle Park High School Aberfoyle Park · Secondary · 7-12	Government	906	56.8 Top 50%	1039	906	13.1
83	Cedar College Northgate · Combined · R-12	Independent	884	64.6 Top 50%	1090	884	13.2
84	Samaritan College Whyalla · Combined · R-12	Catholic	881	33.3 Lower 50%	979	881	13.9
85	St Peter's Collegiate Girls' School Stonyfell · Combined · R-12	Independent	873	84.5 Top 5%	1180	873	11.4
86	St Joseph's School Hectorville · Primary · R-6	Catholic	859	68.6 Top 25%	1077	859	17.8
87	Wilderness School Medindie · Combined · R-12	Independent	856	83.0 Top 5%	1176	856	11.1
88	Pulteney Grammar School Adelaide · Combined · R-12	Independent	839	86.7 Top 5%	1170	839	8.6
89	Aldinga Payinthi College Aldinga · Combined · U, R-12	Government	831	26.0 Lower 50%	954	831	12.9
90	Seaford Secondary College Seaford · Secondary · U, 7-12	Government	829	33.3 Lower 50%	962	829	13.3
91	St Joseph's School Port Lincoln · Combined · R-12	Catholic	829	41.9 Lower 50%	1015	829	13.5
92	Plympton International College Plympton · Combined · R-12	Government	825	53.3 Top 50%	1044	825	12.8
93	Faith Lutheran College Tanunda · Combined · R-12	Independent	816	58.3 Top 50%	1060	816	11.2
94	St Martins Lutheran College Mount Gambier · Combined · R-12	Independent	810	49.7 Top 50%	1028	810	12.1
95	Christies Beach High School Christie Downs · Secondary · U, 7-12	Government	789	23.2 Lower 50%	905	789	12.2
96	Blackfriars Priory School Prospect · Combined · R-12	Catholic	786	49.9 Top 50%	1037	786	13.9
97	Mount Gambier High School Mount Gambier · Secondary · U, 7-12	Government	778	25.6 Lower 50%	946	778	13.9
98	Kildare College Holden Hill · Secondary · 7-12	Catholic	768	65.5 Top 50%	1051	768	13.1
99	Port Lincoln High School Port Lincoln · Secondary · U, 7-12	Government	767	26.7 Lower 50%	923	767	12.2
100	Unity College Murray Bridge · Combined · R-12	Independent	761	40.2 Lower 50%	1004	761	13.1

There are 577 largest schools in South Australia eligible for this list; the top 100 are shown. Open Access College in Marden is ranked first (students: 4,028). 49 of the top 100 are government schools and 51 are Catholic or independent; the median ICSEA across the list is 1039.

The top 10 largest schools in South Australia for 2025 are: 1. Open Access College (Marden); 2. Nazareth Catholic College (Flinders Park); 3. Xavier College (Gawler Belt); 4. Glenunga International High School (Glenunga); 5. Cardijn College (Noarlunga Downs); 6. St Michael's College (Henley Beach); 7. Sacred Heart College (Somerton Park); 8. Reynella East College (Reynella East); 9. Adelaide High School (Adelaide); 10. The Heights School (Modbury Heights).

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Frequently asked questions

What is the best largest school in South Australia?

Open Access College in Marden ranks first among largest schools in South Australia with a Success Index of 44.7 out of 100 and an ICSEA of 1017.

How are largest schools in South Australia ranked?

Schools with the highest total enrolments. Only schools eligible for the Success Index (ICSEA published, 80+ students, not a special school) are included; the Success Index is shown alongside for context.

How many public schools are in the top 100 largest schools in South Australia?

49 of the top 100 largest schools in South Australia are government schools; 51 are Catholic or independent.

Do these rankings include NAPLAN or ATAR results?

Not yet. ACARA does not publish school-level NAPLAN results in bulk, and ATAR results are released by state authorities in different formats. The Success Index uses the measures ACARA publishes for every school so that all schools are compared on identical data. Where a school publishes its own results we link to its website.