The college finished 19th in the rankings with almost a fifth of the units examined receiving a score of 75 or more.
The highest was Carmel school in Dianella that saw 42.28 per cent of stage units examined receive 75 or more.
Thornlie Christian College principal Bill Innes said he was “really excited” when he saw the results.
He credited the way the school built relationships betweens students and teachers as the reason why the school did so well.
“I think what we do that makes us different is that we build strong resilient relationships with our students as we believe the best teaching and learning happens in strong relationships,” he said.
“If you get the relationships right, you can achieve the best of your ability and students engage in the learning process and want to be part of it, and that is when the magic happens. If, however, you have fractured relationships, then it can never be as good as it can be.”
Mr Innes said the key to attracting students to a school was about bringing out the best in a student’s ability.
“I think parents and students look for students who can be the best that he or she can be,” he said.
“My staff were prepared to go beyond the norm so the students can have get a good innings at school.”