Concordia College vs Seymour College
A head-to-head comparison of two combined schools in South Australia, 2.6 km apart, using official ACARA 2025 data. Best value in each row is highlighted.
Concordia College
Highgate · Independent combined · R-12
1,312 students · ICSEA 1140
Seymour College
Glen Osmond · Independent combined · R-12
715 students · ICSEA 1150
| Measure | Concordia College Highgate SA | Seymour College Glen Osmond SA |
|---|---|---|
| Success Index | 74 Top 25% | 76 Top 25% |
| State rank (type) | #14 of 145 | #12 of 145 |
| National rank (type) | #195 of 1,259 | #165 of 1,259 |
| Sector | Independent | Independent |
| Type | Combined | Combined |
| Year range | R-12 | R-12 |
| Students | 1,312 | 715 |
| Girls / boys | 646 / 666 | 715 / 0 |
| Foundation intake | 49 | 25 |
| Year 7 cohort | 151 | 51 |
| Year 12 cohort | 142 | 98 |
| VCE median study score VCAA, latest year | – | – |
| VCE study scores 40+ | – | – |
| 5-year enrolment growth | +6% | -4% |
| ICSEA Average 1000 | 1140 | 1150 |
| ICSEA percentile | 93th | 95th |
| Top SEA quarter | 56% | 61% |
| Bottom SEA quarter | 2% | 4% |
| Students per teacher | 12.2 | 10.8 |
| Teaching staff (FTE) | 107.2 | 66.3 |
| Non-teaching staff (FTE) | 56.9 | 52.4 |
| Language background other than English | 17% | 14% |
| Indigenous students | 1% | 2% |
| Suburb | Highgate 5063 | Glen Osmond 5064 |
| Council area | Unley | Burnside |
| Remoteness | Major Cities | Major Cities |
| Website | www.concordia.sa.edu.au | www.seymour.sa.edu.au |
The verdict
- •Seymour College scores higher on the Success Index (76.2 vs 73.9).
- •Seymour College has the higher ICSEA (1150 vs 1140), indicating a more advantaged community.
- •Seymour College has fewer students per teacher (10.8 vs 12.2).
- •Concordia College is the larger school with 1,312 students compared with 715.
- •Concordia College has grown faster over five years (6% vs -4%).
The Success Index summarises community advantage, resourcing and momentum from ACARA data. It does not measure teaching quality, results or fit. Methodology.
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Frequently asked questions
Is Concordia College better than Seymour College?
On the Success Index, Seymour College ranks higher (76.2 vs 73.9 out of 100). The index measures community advantage and momentum from ACARA data, not teaching quality, so visit both schools before deciding.
How far apart are Concordia College and Seymour College?
About 2.6 km in a straight line, between Highgate and Glen Osmond in South Australia.
Which has the better student-to-teacher ratio?
Concordia College has 12.2 students per full-time-equivalent teacher and Seymour College has 10.8.
How do Concordia College and Seymour College rank in SA?
Concordia College is 14th of 145 and Seymour College is 12th of 145 among combined schools in South Australia on the 2025 Success Index.