diff --git a/lib/TestResult.js b/lib/TestResult.js
index a801789..19552f8 100644
--- a/lib/TestResult.js
+++ b/lib/TestResult.js
@@ -109,8 +109,8 @@ class TestResult {
 	}
 
 	get grade() {
-		//TODO get actual grades
-		return 'C';
+		return this.test.template.gradeBoundaries.getGrade(
+			this.percentage);
 	}
 
 	delete() {