This report lists the winners of Certificates of Distinction and Certificates of Merit for 2020, along with the school that they attended.
These certificates are awarded to students who achieve at least 150 points (Certificate of Merit) or 190 points (Certificate of Distinction) across 20 year 11 and year 12 course units or equivalents, of which 10 are at year 12 level.
Formerly these awards were named Certificates of Commendation (2012-2015) or Certificates of Excellence (prior to 2012), and were based on achievements of at least 20 'A' grades in course units or equivalents.
| 651 | Cert of Distinction | Middleton, Winston | Lesmurdie Senior High School | Lesmurdie |
| 652 | Cert of Distinction | Miels, Ella | Presbyterian Ladies College | Peppermint Grove |
| 653 | Cert of Distinction | Milford, Breah | Mercedes College | Perth |
| 654 | Cert of Distinction | Milios, Elizabeth | Churchlands Senior High School | Churchlands |
| 655 | Cert of Distinction | Miller, Brodie | Kearnan College | Manjimup |
| 656 | Cert of Distinction | Milne, Isabel | Penrhos College | Como |
| 657 | Cert of Distinction | Milne, Isabel | Ursula Frayne Catholic College | Victoria Park |
| 658 | Cert of Distinction | Mincherton, Grace | St Marys Anglican Girls School | Karrinyup |
| 659 | Cert of Distinction | Miocevich, Gabriella | Mercedes College | Perth |
| 660 | Cert of Distinction | Misiun, Pavel | Trinity College | East Perth |
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| 661 | Cert of Distinction | Mitchell, Erin | Churchlands Senior High School | Churchlands |
| 662 | Cert of Distinction | Mody, Shenelle | Perth College | Mount Lawley |
| 663 | Cert of Distinction | Mohd Fauzi, Nurul Aiman | Christmas Is District High School | Christmas Island |
| 664 | Cert of Distinction | Molony, Sophie | Santa Maria College | Attadale |
| 665 | Cert of Distinction | Monteiro, Dillon | Wesley College | South Perth |
| 666 | Cert of Distinction | Montgomery, Saul | Mount Lawley Senior High School | Mount Lawley |
| 667 | Cert of Distinction | Moore, Cameron | All Saints College | Bull Creek |
| 668 | Cert of Distinction | Moore, Lucas | Christ Church Grammar School | Claremont |
| 669 | Cert of Distinction | Morgan, Shannon | Methodist Ladies College | Claremont |
| 670 | Cert of Distinction | Moriff, Amira | Rossmoyne Senior High School | Rossmoyne |
| 671 | Cert of Distinction | Morris, Mark | Christ Church Grammar School | Claremont |
| 672 | Cert of Distinction | Morris-Johnson, Oriana | Methodist Ladies College | Claremont |
| 673 | Cert of Distinction | Morrison, Samuel | Guildford Grammar School | Guildford |
| 674 | Cert of Distinction | Mountain, Lara | Shenton College | Shenton Park |
| 675 | Cert of Distinction | Moylan, Liam | Corpus Christi College | Bateman |
| 676 | Cert of Distinction | Mukhedkar, Varad | Christ Church Grammar School | Claremont |
| 677 | Cert of Distinction | Mulroy, Jorja | Penrhos College | Como |
| 678 | Cert of Distinction | Murphy, Ava | Santa Maria College | Attadale |
| 679 | Cert of Distinction | Murphy, Livia | St Hildas Anglican School for Girls | Mosman Park |
| 680 | Cert of Distinction | Murray, Eliza | Presbyterian Ladies College | Peppermint Grove |
| 681 | Cert of Distinction | Murray, Leila | St Marys Anglican Girls School | Karrinyup |
| 682 | Cert of Distinction | Musikanth, Hannah | Perth College | Mount Lawley |
| 683 | Cert of Distinction | Nahas, Michael | Ursula Frayne Catholic College | Victoria Park |
| 684 | Cert of Distinction | Nair, Gauri | Willetton Senior High School | Willetton |
| 685 | Cert of Distinction | Nair, Rishika | John Curtin College of the Arts | Fremantle |
| 686 | Cert of Distinction | Nam, Kelly | Rossmoyne Senior High School | Rossmoyne |
| 687 | Cert of Distinction | Naunton-Morgan, Kate | Santa Maria College | Attadale |
| 688 | Cert of Distinction | Neates, Oliver | Aquinas College | Salter Point |
| 689 | Cert of Distinction | Nelson, Monique | Kelmscott Senior High School | Kelmscott |
| 690 | Cert of Distinction | Neo, Charisse | Rossmoyne Senior High School | Rossmoyne |
| 691 | Cert of Distinction | Neppe, Zach | Hale School | Wembley Downs |
| 692 | Cert of Distinction | Newman, Vincent | Esperance Senior High School | Esperance |
| 693 | Cert of Distinction | Ng, Allison | Willetton Senior High School | Willetton |
| 694 | Cert of Distinction | Ng, Celine | Methodist Ladies College | Claremont |
| 695 | Cert of Distinction | Ng, Hsien Jie | Corpus Christi College | Bateman |
| 696 | Cert of Distinction | Ng, Kin Feng | Rossmoyne Senior High School | Rossmoyne |
| 697 | Cert of Distinction | Ng, Tin Yan | Rossmoyne Senior High School | Rossmoyne |
| 698 | Cert of Distinction | Ngaw, Ryan | Rossmoyne Senior High School | Rossmoyne |
| 699 | Cert of Distinction | Nguyen, Caitlin | Mercy College | Koondoola |
| 700 | Cert of Distinction | Nguyen, Jordan | Chisholm Catholic College | Bedford |