Mercedes College vs Seymour College
Mercedes College (Springfield) is a catholic school and Seymour College (Glen Osmond) is a independent school. Mercedes College is co-educational; Seymour College is a girls’ school. Both teach R-12. Only Seymour College takes boarders. Mercedes College has 1,111 students and Seymour College has 715 (ACARA 2025). They are about 2.9 km apart in a straight line.
Photos: Mercedes College: Photo: Michael Coghlan, CC BY-SA 2.0, via Flickr · Seymour College (school website)
See both schools’ full fees, ATAR results and cost to Year 12
Every year level’s fees from each school’s own schedule, the results each school publishes, and the total cost to Year 12, side by side.
Compare these schools in full →A$9.99 a year, cancel anytimeSecure payment by Stripe
Key numbers
Students, ICSEA, students per teacher and girls/boys: ACARA My School 2025 (students per teacher is total enrolments divided by full-time-equivalent teaching staff; it isn’t class size).
Fees and results
Side by side
| Fact | Mercedes College | Seymour College |
|---|---|---|
| Suburb | Springfield | Glen Osmond |
| Region | Adelaide - South | Adelaide - Central and Hills |
| Sector | Catholic | Independent |
| Students | Co-ed | Girls |
| Year levels | R-12 | R-12 |
| Religion | Catholic (Mercy) | Uniting Church |
| Boarding | No | Yes |
| Senior years | SACE + IB Diploma | SACE |
| Facilities and sport (school site) | Australian rules football, Soccer, Netball, Cricket, Basketball, Swimming, Athletics, Tennis, Volleyball, Badminton, Water polo | Swimming pool, Gym, Oval, Indoor sports centre, Theatre / performing arts centre, Boarding, Early learning centre, Library, Science / STEM labs, Australian rules football, Soccer, Netball, Cricket, Basketball, Rowing, Swimming, Athletics, Tennis, Hockey, Volleyball, Badminton, Water polo |
| Distance apart | About 2.9 km in a straight line | |
Facts from ACARA (2025) and each school’s own website.
Which suits whom
- Families wanting a co-educational school: Mercedes College is co-ed.
- Families wanting a single-sex school for a daughter: Seymour College takes girls only.
- Families needing boarding: only Seymour College takes boarders.
- Students wanting the IB Diploma: Mercedes College lists it on its website; Seymour College does not confirm it.
- Families choosing by faith: Mercedes College is Catholic (Mercy); Seymour College is Uniting Church.
- Location: Mercedes College is in Springfield (Adelaide - South); Seymour College is in Glen Osmond (Adelaide - Central and Hills).
- Size: Mercedes College is the larger school, with 396 more students.
- Smaller ratio: Seymour College has fewer students per teacher (10.8 against 12.0, ACARA 2025).
- Listed by Seymour College but not Mercedes College: Swimming pool, Gym, Oval, Indoor sports centre, Theatre / performing arts centre, Boarding, Early learning centre, Library, Science / STEM labs, Rowing and Hockey.
History
Mercedes College
The Sisters of Mercy reached Adelaide in 1880 after leaving Buenos Aires during unrest there, and later ran a girls’ boarding school as part of St Aloysius in Angas Street. Looking for a healthier setting for their boarders, they bought a 20-acre property at Springfield, centred on Strathspey, the house Sir John Duncan built in 1899, and opened Mercedes College in 1954 with 80 boarders and 60 day pupils. “Mercedes” is Spanish for mercy, a nod to the order’s Argentine connection.
Source: en.wikipedia.org
Seymour College
Seymour College opened in 1922 as Presbyterian Girls’ College, with about 100 girls across five year levels and the Reverend Dr Herbert Postle as its first principal. Its home at Glen Osmond centres on Barr Smith House, a mansion built in 1861 as Wootton Lea, which over the years has housed boarders, art classes, swimming lessons and principals.
Source: seymour.sa.edu.au
Questions parents ask
What is the difference between Mercedes College and Seymour College?
Mercedes College is co-educational; Seymour College is a girls’ school. Both teach R-12. Only Seymour College takes boarders.
Is Mercedes College or Seymour College co-ed?
Mercedes College is co-educational and Seymour College is a girls’ school.
Which is bigger, Mercedes College or Seymour College?
Mercedes College is bigger: 1,111 students against 715 (ACARA 2025).
How many students per teacher do Mercedes College and Seymour College have?
Mercedes College has 12.0 students per teacher and Seymour College has 10.8 (ACARA My School 2025: total enrolments divided by full-time-equivalent teaching staff).
Which is older, Mercedes College or Seymour College?
Seymour College is older. Mercedes College was founded in 1954 and Seymour College in 1922.
Do Mercedes College and Seymour College take boarders?
Only Seymour College takes boarders.
How far apart are Mercedes College and Seymour College?
About 2.9 km in a straight line: Mercedes College is in Springfield and Seymour College is in Glen Osmond.
How do Mercedes College and Seymour College fees compare?
Each school publishes its own fee schedule. Members see both schedules year by year, the results each school reports and the total cost to Year 12. Always confirm current fees with the school.
Related comparisons
- Mercedes College vs Saint Ignatius' College
- Mercedes College vs Scotch College
- Concordia College vs Mercedes College
- Seymour College vs St Peter's Collegiate Girls' School
- Seymour College vs Walford Anglican School for Girls
- Seymour College vs Wilderness School
- Concordia College vs Seymour College
School profiles
Get the full picture: fees, ATAR results and cost to Year 12
Every year level’s fees from each school’s own schedule, the results each school publishes, and the total cost to Year 12, side by side.
Compare these schools in full →A$9.99 a year, cancel anytimeSecure payment by Stripe
Source and date
Enrolment, ICSEA, students per teacher and girls/boys: ACARA My School 2025. Other facts: each school’s website, checked 21 October 2026. Distance is a straight line between the schools’ map points, not travel distance. Check details with the schools before deciding. Methodology