| 52 | 1 | Bishop Macdonell Catholic Secondary School | Wellington CDSB | Guelph | Catholic | 8.5 | 8.5 | 8.3 | 7.9 | +0.6 ↑ | Visit |
| 84 | 1 | Centennial Collegiate and Vocational Institute | Upper Grand DSB | Guelph | Public | 8.2 | 8.2 | 7.9 | 8.2 | 0.0 → | Visit |
| 108 | 2 | Guelph Collegiate and Vocational Institute | Upper Grand DSB | Guelph | Public | 8.1 | 8.1 | 8.2 | 8.0 | +0.1 ↑ | Visit |
| 109 | 3 | John F Ross Collegiate and Vocational Institute | Upper Grand DSB | Guelph | Public | 8.1 | 8.1 | 7.3 | 7.4 | +0.7 ↑ | Visit |
| 470 | 2 | Our Lady of Lourdes Catholic School | Wellington CDSB | Guelph | Catholic | 6.3 | 6.3 | 6.3 | 6.2 | +0.1 ↑ | Visit |
| 471 | 3 | St James Catholic School | Wellington CDSB | Guelph | Catholic | 6.3 | 6.3 | 6.6 | 6.5 | -0.2 ↓ | Visit |
| 766 | 11 | College Heights Secondary School | Upper Grand DSB | Guelph | Public | 1.8 | 1.8 | 4.1 | 2.5 | -0.7 ↓ | Visit |
| 799 | 4 | St John Bosco Catholic School | Wellington CDSB | Guelph | Catholic | — | — | — | — | — | Visit |
| 804 | 5 | Wellington Catholic Online School | Wellington CDSB | Guelph | Catholic | — | — | — | — | — | — |
| 850 | 12 | UGDSB Online Learning Program | Upper Grand DSB | Guelph | Public | — | — | — | — | — | Visit |
| 851 | 13 | Unnamed Secondary School | Upper Grand DSB | Guelph | Public | — | — | — | — | — | — |
| 904 | 15 | Day School -Wellington Centre - ContEd | Upper Grand DSB | Guelph | Public | — | — | — | — | — | Visit |