This report lists the winners of Certificates of Distinction and Certificates of Merit for 2018, 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.
| 1051 | Cert of Distinction | ROGERS, SAM | Scotch College | Swanbourne |
| 1052 | Cert of Distinction | ROLFE, CHARLIE LOUISE | Carine Senior High School | Carine |
| 1053 | Cert of Distinction | ROMEO, CLAUDIA | Mercedes College | Perth |
| 1054 | Cert of Distinction | ROSS, ELIZABETH | Peter Moyes Anglican Community School | Mindarie |
| 1055 | Cert of Distinction | ROSS, MIA | Iona Presentation College | Mosman Park |
| 1056 | Cert of Distinction | ROSSI, PRISCILLA | Santa Maria College | Attadale |
| 1057 | Cert of Distinction | ROUFAIL, ZOE | Penrhos College | Como |
| 1058 | Cert of Distinction | ROWBOTTAM, FINNEGAN | Hale School | Wembley Downs |
| 1059 | Cert of Distinction | ROWNES, KEVIE | Carey Baptist College | Harrisdale |
| 1060 | Cert of Distinction | ROY, IRENE | Methodist Ladies College | Claremont |
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| 1061 | Cert of Distinction | ROY, MAHANA | Geraldton Grammar School | Geraldton |
| 1062 | Cert of Distinction | RUANE, TIAHNA | Lumen Christi College | Martin |
| 1063 | Cert of Distinction | RULE, LUKE | Aquinas College | Salter Point |
| 1064 | Cert of Distinction | RYAN, AMY | Churchlands Senior High School | Churchlands |
| 1065 | Cert of Distinction | RYAN, CASSIE | St Marys Anglican Girls School | Karrinyup |
| 1066 | Cert of Distinction | RYAN, CLAIRE | Santa Maria College | Attadale |
| 1067 | Cert of Distinction | RYAN, ETHAN | Trinity College | East Perth |
| 1068 | Cert of Distinction | RYAN, JAMES | Hale School | Wembley Downs |
| 1069 | Cert of Distinction | RYAN, LIAM | St Stephens School Duncraig | Duncraig |
| 1070 | Cert of Distinction | RYAN, LUCY | Penrhos College | Como |
| 1071 | Cert of Distinction | SABADINI, MATTHEW JAYDON | Mindarie Senior College | Mindarie |
| 1072 | Cert of Distinction | SADD, FERN | Churchlands Senior High School | Churchlands |
| 1073 | Cert of Distinction | SAKELLARIS, DAMIAN | Guildford Grammar School | Guildford |
| 1074 | Cert of Distinction | SALAHUDDIN, TALHA | Hale School | Wembley Downs |
| 1075 | Cert of Distinction | SALMOND, BENJAMIN | St Mary MacKillop College | West Busselton |
| 1076 | Cert of Distinction | SAMNAKAY, SARAH | St Marys Anglican Girls School | Karrinyup |
| 1077 | Cert of Distinction | SAMUELS, STEVEN | Kelmscott Senior High School | Kelmscott |
| 1078 | Cert of Distinction | SANDERS, ASHLEIGH | La Salle College | Middle Swan |
| 1079 | Cert of Distinction | SANTELLI, ELLA | Methodist Ladies College | Claremont |
| 1080 | Cert of Distinction | SANTOSO, JOSEPHINE ADELIA | Willetton Senior High School | Willetton |
| 1081 | Cert of Distinction | SARICH, SANITA | John Septimus Roe Anglican Community School | Mirrabooka |
| 1082 | Cert of Distinction | SAUTA, DOMENICO RALPH | John Curtin College of the Arts | Fremantle |
| 1083 | Cert of Distinction | SAWYER, ERICA | Helena College | Glen Forrest |
| 1084 | Cert of Distinction | SAXTON, AMBER PAULETTE | Willetton Senior High School | Willetton |
| 1085 | Cert of Distinction | SAYOUR, MARIAM | Australian Islamic College Kewdale | Kewdale |
| 1086 | Cert of Distinction | SCAFFIDI, HENRI | Christ Church Grammar School | Claremont |
| 1087 | Cert of Distinction | SCAINI, KURTIS | Aquinas College | Salter Point |
| 1088 | Cert of Distinction | SCANLAN, JORDAN | Kennedy Baptist College | Murdoch |
| 1089 | Cert of Distinction | SCANLON, MADELEINE | St Marys Anglican Girls School | Karrinyup |
| 1090 | Cert of Distinction | SCHAUB, YANIK | Prendiville Catholic College | Ocean Reef |
| 1091 | Cert of Distinction | SCHELFHOUT, JACOB | La Salle College | Middle Swan |
| 1092 | Cert of Distinction | SCHMAH, LILI | Seton Catholic College | Samson |
| 1093 | Cert of Distinction | SCHMIDT, JACK | CBC Fremantle | Fremantle |
| 1094 | Cert of Distinction | SCHMIDT, JASMINE MAY | Perth Modern School | Subiaco |
| 1095 | Cert of Distinction | SCHUTZ, KAYLENE | Carmel School | Dianella |
| 1096 | Cert of Distinction | SCOTT, JOEL LLEWELLYN | Perth Modern School | Subiaco |
| 1097 | Cert of Distinction | SEET, KEE-AN | Willetton Senior High School | Willetton |
| 1098 | Cert of Distinction | SEGARAN, MONISHA DEVI | Rossmoyne Senior High School | Rossmoyne |
| 1099 | Cert of Distinction | SEITZ, JULIA JOY | Perth Modern School | Subiaco |
| 1100 | Cert of Distinction | SELLECK, MADISON | Perth College | Mount Lawley |