This report lists the winners of Certificates of Distinction and Certificates of Merit for 2021, 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.
| 3051 | Cert of Merit | Sarantellou, Maria Eleni | Mount Lawley Senior High School | Mount Lawley |
| 3052 | Cert of Merit | Satie, Grace | Bunbury Cathedral Grammar School | Gelorup |
| 3053 | Cert of Merit | Saunders, James | Aquinas College | Salter Point |
| 3054 | Cert of Merit | Saunders, Tomika | Applecross Senior High School | Ardross |
| 3055 | Cert of Merit | Sauzier, Ella | Perth College | Mount Lawley |
| 3056 | Cert of Merit | Savidis, Zoe | Rossmoyne Senior High School | Rossmoyne |
| 3057 | Cert of Merit | Scarfone, Isabella | Mercedes College | Perth |
| 3058 | Cert of Merit | SCHILLING, Matthew | Mazenod College | Lesmurdie |
| 3059 | Cert of Merit | Schlaich, Noah | John XXIII College | Mount Claremont |
| 3060 | Cert of Merit | Schluter, Lachlan | Churchlands Senior High School | Churchlands |
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| 3061 | Cert of Merit | Schneider, Koby | Duncraig Senior High School | Duncraig |
| 3062 | Cert of Merit | Schneider, Michael | Carine Senior High School | Carine |
| 3063 | Cert of Merit | Schofield, Katherine | Swan Christian College | Middle Swan |
| 3064 | Cert of Merit | Schokman, John-Paul | Kingsway Christian College | Darch |
| 3065 | Cert of Merit | Scholtz, Tabatha | Kingsway Christian College | Darch |
| 3066 | Cert of Merit | Scholz, Clara | Perth Modern School | Subiaco |
| 3067 | Cert of Merit | Scholz, Nikota | Narrogin Senior High School | Narrogin |
| 3068 | Cert of Merit | Schonfeldt, Emma | Kingsway Christian College | Darch |
| 3069 | Cert of Merit | SCOP, Leora | Carmel School | Dianella |
| 3070 | Cert of Merit | Scott, James | Wesley College | South Perth |
| 3071 | Cert of Merit | Scott, Kady | Irene Mccormack Catholic College | Butler |
| 3072 | Cert of Merit | Scott, Tegan | Duncraig Senior High School | Duncraig |
| 3073 | Cert of Merit | Scott-Jones, Riley | Rossmoyne Senior High School | Rossmoyne |
| 3074 | Cert of Merit | Scutti, Nardia | St Stephens School Carramar | Tapping |
| 3075 | Cert of Merit | Seah, Levi | John XXIII College | Mount Claremont |
| 3076 | Cert of Merit | Sedgwick, Tayla | Penrhos College | Como |
| 3077 | Cert of Merit | Seet, Min-En | Willetton Senior High School | Willetton |
| 3078 | Cert of Merit | Seet, Wei-En | Willetton Senior High School | Willetton |
| 3079 | Cert of Merit | Selesnew, Alyssa | Iona Presentation College | Mosman Park |
| 3080 | Cert of Merit | Self, Oliver | Frederick Irwin Anglican School | Mandurah |
| 3081 | Cert of Merit | Sellenies, Larissa | Rossmoyne Senior High School | Rossmoyne |
| 3082 | Cert of Merit | Selvakumaran, Vandana | Duncraig Senior High School | Duncraig |
| 3083 | Cert of Merit | Senger, Shaswat | St Lukes College | Karratha |
| 3084 | Cert of Merit | Seppiyo, Lola | Manea Senior College | Bunbury |
| 3085 | Cert of Merit | Serra-Jones, Alessandra | St Marys Anglican Girls School | Karrinyup |
| 3086 | Cert of Merit | Seton-Browne, Thomas | Christ Church Grammar School | Claremont |
| 3087 | Cert of Merit | Sha, Hoiyen | Chisholm Catholic College | Bedford |
| 3088 | Cert of Merit | Shah, Aarav | Wesley College | South Perth |
| 3089 | Cert of Merit | Shah, Benjamin | Trinity College | East Perth |
| 3090 | Cert of Merit | Shah, Dev | Ashdale Secondary College | Darch |
| 3091 | Cert of Merit | Shah, Riana | St Stephens School Carramar | Tapping |
| 3092 | Cert of Merit | Shaheen, Umar | Leeming Senior High School | Leeming |
| 3093 | Cert of Merit | Shanahan, Caelan | Wesley College | South Perth |
| 3094 | Cert of Merit | Shang, Xuelan | Emmanuel Catholic College | Success |
| 3095 | Cert of Merit | Sharma, Aditya | Mercy College | Koondoola |
| 3096 | Cert of Merit | Sharma, Aryan | Ballajura Community College | Ballajura |
| 3097 | Cert of Merit | Sharma, Roshit | Providence Christian College | Southern River |
| 3098 | Cert of Merit | Sharman, Olivia | Ursula Frayne Catholic College | Victoria Park |
| 3099 | Cert of Merit | Sharp, Ashleigh | Duncraig Senior High School | Duncraig |
| 3100 | Cert of Merit | Sharrock, Rylee | Joseph Banks Secondary College | Banksia Grove |