CHAC has developed a strong academic tradition, with continued excellent academic performance across OP and QCS testing, NAPLAN testing, external academic competitions and increased student participation in accelerated programs.
Year 12 OP Results
| Year | OP1 | OP1 to OP5 | OP1 to OP10 | OP1 to OP15 |
| 2019 | 10.80% | 47.30% | 81.10% | 98.60% |
| 2018 | 10.3% | 41.1% | 75.7% | 96.3% |
| 2017 | 4.4% | 34.3% | 69.3% | 91.2% |
| 2016 | 6.4% | 36% | 73.6% | 96% |
| 2015 | 37.6% | 79.2% | 98.4% |
2018 NAPLAN Results
| Category | CHAC Average | State Average | % Above State Average | National Average | % Above National Average |
| Year 3 | |||||
| Reading | 480 | 429 | 11.89 | 434 | 10.6 |
| Writing | 440 | 404 | 8.91 | 407 | 8.11 |
| Spelling | 425 | 411 | 3.41 | 418 | 1.67 |
| Grammar and Punctuation | 459 | 429 | 6.99 | 432 | 6.25 |
| Numeracy | 425 | 398 | 6.78 | 408 | 4.07 |
| Year 5 | |||||
| Reading | 558 | 506 | 10.28 | 509 | 9.63 |
| Writing | 517 | 454 | 13.88 | 465 | 11.18 |
| Spelling | 531 | 497 | 6.84 | 502 | 5.58 |
| Grammar and Punctuation | 548 | 501 | 9.38 | 504 | 8.73 |
| Numeracy | 522 | 487 | 7.19 | 494 | 5.67 |
| Year 7 | |||||
| Reading | 604 | 536 | 12.69 | 542 | 11.44 |
| Writing | 542 | 492 | 9.94 | 505 | 7.33 |
| Spelling | 585 | 541 | 7.95 | 545 | 7.16 |
| Grammar and Punctuation | 611 | 542 | 12.73 | 544 | 12.32 |
| Numeracy | 606 | 540 | 12.22 | 548 | 10.58 |
| Year 9 | |||||
| Reading | 640 | 577 | 10.92 | 584 | 9.40 |
| Writing | 595 | 526 | 12.74 | 542 | 9.78 |
| Spelling | 640 | 580 | 10.34 | 583 | 9.78 |
| Grammar and Punctuation | 644 | 579 | 11.23 | 581 | 10.84 |
| Numeracy | 644 | 588 | 9.52 | 596 | 8.05 |
ICAS Competitions
In ICAS, the highly-regarded national academic competition, four College students were recognised as the top students in Queensland with ICAS Medals in Year 6 and 11 Writing, Year 12 Science and Year 12 Mathematics. In addition, 32 High Distinctions were awarded, recognising the top 1% of students in the State: English (15), Writing (6), Mathematics (5) and Science (6). In recognition of the next 10% of student results in the State, 180 Distinctions were awarded for English (57), Writing (33), Mathematics (32), Science (51) and Digital Technologies (7).
Gifted Education
In 2016, for the first time, extension opportunities were successfully introduced in English in Years 8 to 10, catering to gifted English students with units in Creative Writing and Literature Studies. The units were enjoyed by students selected for the program and resulted in the production of some exceptional work.
This year, the College also expanded specialist acceleration programs for students demonstrating very high ability in certain subjects. Seventy-one students—the largest number to date—undertook individual acceleration pathways through the College’s curriculum offerings, mainly in Mathematics.
The group of accelerated Year 12 students who completed their Mathematics course in 2015 then used the time made available in their timetables this year to pursue various individual challenges including: preparing for the University Medical Admissions Test, studying Mathematics at the University of Queensland (one student achieved the highest grade of 7), studying Music as an additional Year 12 subject (achieving a top of cohort VHA), training for an Excellence in Swimming program, and studying a Certificate course in Pharmacy.
