This report lists the winners of Certificates of Distinction and Certificates of Merit for 2009, 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.
| 251 | Cert of Excellence | KING, EBONY MICHELLE | Mercedes College | Perth |
| 252 | Cert of Excellence | KING, GREGORY | Scotch College | Swanbourne |
| 253 | Cert of Excellence | KING, LAUREN CLARE | Eastern Hills Senior High School | Mount Helena |
| 254 | Cert of Excellence | KIRBY, SARAH LEANNE | Santa Maria College | Attadale |
| 255 | Cert of Excellence | KITCHING, EMMA SHEREE | St Lukes College | Karratha |
| 256 | Cert of Excellence | KNIERUM, JAYMII LEE | Mindarie Senior College | Mindarie |
| 257 | Cert of Excellence | KO, MICHELLE YI TUNG | Sacred Heart College | Sorrento |
| 258 | Cert of Excellence | KONG, ANDREW TIAN YANG | Chisholm Catholic College | Bedford |
| 259 | Cert of Excellence | KONG, JASON | Christ Church Grammar School | Claremont |
| 260 | Cert of Excellence | KONG, JESSICA WEI | Methodist Ladies College | Claremont |
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| 261 | Cert of Excellence | KRAFT, PRUE ADRIENNE | Leeming Senior High School | Leeming |
| 262 | Cert of Excellence | KROEGER, PETER CARL | All Saints College | Bull Creek |
| 263 | Cert of Excellence | KRUGER, JUSTIN JESSADA | Bunbury Cathedral Grammar School | Gelorup |
| 264 | Cert of Excellence | KUEH, BRANDON | Christ Church Grammar School | Claremont |
| 265 | Cert of Excellence | LA ROSA, NATALIE JOANNE | Mater Dei College | Edgewater |
| 266 | Cert of Excellence | LAI, XINYI | Rossmoyne Senior High School | Rossmoyne |
| 267 | Cert of Excellence | LANG, MITCHELL PETER | Scotch College | Swanbourne |
| 268 | Cert of Excellence | LAWLOR, CONOR AIDAN | Melville Senior High School | Melville |
| 269 | Cert of Excellence | LAZAROV, ANNALYSE PETRA | Balcatta Senior High School | Balcatta |
| 270 | Cert of Excellence | LE, MINH TOAN | Ursula Frayne Catholic College | Victoria Park |
| 271 | Cert of Excellence | LEDGER, THOMAS EDWARD | Scotch College | Swanbourne |
| 272 | Cert of Excellence | LEE, ANTHONY SOON-KIT | All Saints College | Bull Creek |
| 273 | Cert of Excellence | LEE, CASSANDRA ALEXIS | Shenton College | Shenton Park |
| 274 | Cert of Excellence | LEE, JUEUN | Churchlands Senior High School | Churchlands |
| 275 | Cert of Excellence | LEE, KIRSTAN JOY | Rossmoyne Senior High School | Rossmoyne |
| 276 | Cert of Excellence | LEE, SASCHA | St Stephens School Carramar | Tapping |
| 277 | Cert of Excellence | LEFROY, TIMOTHY RICHARD | Scotch College | Swanbourne |
| 278 | Cert of Excellence | LEIPER, AMY JAYNE | Esperance Senior High School | Esperance |
| 279 | Cert of Excellence | LEMUT, SILVIO | Seton Catholic College | Samson |
| 280 | Cert of Excellence | LEUNG, MATTHEW DAVID | Scotch College | Swanbourne |
| 281 | Cert of Excellence | LEWIS, JESSIE ELLEN | Living Waters Lutheran College | Warnbro |
| 282 | Cert of Excellence | LEWIS, KESHA MONIQUE | Santa Maria College | Attadale |
| 283 | Cert of Excellence | LI, PETER | Rossmoyne Senior High School | Rossmoyne |
| 284 | Cert of Excellence | LIM, WENDY YIN | John Septimus Roe Anglican Community School | Mirrabooka |
| 285 | Cert of Excellence | LIMBOURIS, LAUREN IRENE | Churchlands Senior High School | Churchlands |
| 286 | Cert of Excellence | LINDSAY, PENELOPE BRIDGET | St Hildas Anglican School for Girls | Mosman Park |
| 287 | Cert of Excellence | LINTON, MATTHEW ROBERT | Wesley College | South Perth |
| 288 | Cert of Excellence | LITTLE, GEMMA JEAN | Kingsway Christian College | Darch |
| 289 | Cert of Excellence | LOCHNER, MICHELLE | Somerville Baptist College | Murdoch |
| 290 | Cert of Excellence | LONG, TREYA MAREE | St Lukes College | Karratha |
| 291 | Cert of Excellence | LOSTROM, SAMANTHA | John Septimus Roe Anglican Community School | Mirrabooka |
| 292 | Cert of Excellence | LOUGHMAN, LILY | All Saints College | Bull Creek |
| 293 | Cert of Excellence | LOWE, DANIEL WILLIAM ROBERT | John Wollaston Anglican Community School | Camillo |
| 294 | Cert of Excellence | LU, AARON JING-YONG | Winthrop Baptist College | Murdoch |
| 295 | Cert of Excellence | LU, BO AN | Christ Church Grammar School | Claremont |
| 296 | Cert of Excellence | LUO, KI-YUNG | Lake Joondalup Baptist College | Joondalup |
| 297 | Cert of Excellence | LYMBERY, SAMUEL JAMES | Australind Senior High School | Australind |
| 298 | Cert of Excellence | LYONS, ARIEL CLARE | Perth Modern School | Subiaco |
| 299 | Cert of Excellence | MAC, ALVIN HOU YIN | Willetton Senior High School | Willetton |
| 300 | Cert of Excellence | MACDONALD, STACEY ANNE | Ballajura Community College | Ballajura |