diff --git a/packages/cutie-core/src/lib/expressionEvaluator/string.ts b/packages/cutie-core/src/lib/expressionEvaluator/string.ts
index d2f41b2..d31f75f 100644
--- a/packages/cutie-core/src/lib/expressionEvaluator/string.ts
+++ b/packages/cutie-core/src/lib/expressionEvaluator/string.ts
@@ -14,7 +14,7 @@ export function evaluateSubstring(
   variables: Record<string, unknown>,
   subEvaluate: SubEvaluate
 ): boolean {
-  const caseSensitive = element.getAttribute('case-sensitive') === 'true';
+  const caseSensitive = element.getAttribute('case-sensitive') !== 'false';
   const values: string[] = [];
 
   for (const child of getChildElements(element)) {
@@ -39,7 +39,7 @@ export function evaluateStringMatch(
   variables: Record<string, unknown>,
   subEvaluate: SubEvaluate
 ): boolean {
-  const caseSensitive = element.getAttribute('case-sensitive') === 'true';
+  const caseSensitive = element.getAttribute('case-sensitive') !== 'false';
   const values: string[] = [];
 
   for (const child of getChildElements(element)) {
diff --git a/packages/cutie-core/src/lib/initializeState.spec.ts b/packages/cutie-core/src/lib/initializeState.spec.ts
index 1f796d1..767c6f2 100644
--- a/packages/cutie-core/src/lib/initializeState.spec.ts
+++ b/packages/cutie-core/src/lib/initializeState.spec.ts
@@ -1869,50 +1869,6 @@ describe('initializeState', () => {
       expect(state.variables.RESULT).toBe(true);
     });
 
-    test('qti-string-match defaults to case-insensitive', () => {
-      const xml = `<?xml version="1.0" encoding="UTF-8"?>
-        <qti-assessment-item xmlns="http://www.imsglobal.org/xsd/imsqtiasi_v3p0"
-          identifier="string-match-default" title="String Match Default">
-          <qti-template-declaration identifier="RESULT" cardinality="single" base-type="boolean"/>
-          <qti-template-processing>
-            <qti-set-template-value identifier="RESULT">
-              <qti-string-match>
-                <qti-base-value base-type="string">Hello</qti-base-value>
-                <qti-base-value base-type="string">hello</qti-base-value>
-              </qti-string-match>
-            </qti-set-template-value>
-          </qti-template-processing>
-          <qti-item-body><p>Test</p></qti-item-body>
-        </qti-assessment-item>`;
-
-      const itemDoc = parser.parseFromString(xml, 'text/xml');
-      const state = initializeState(itemDoc);
-
-      expect(state.variables.RESULT).toBe(true);
-    });
-
-    test('qti-substring defaults to case-insensitive', () => {
-      const xml = `<?xml version="1.0" encoding="UTF-8"?>
-        <qti-assessment-item xmlns="http://www.imsglobal.org/xsd/imsqtiasi_v3p0"
-          identifier="substring-default" title="Substring Default">
-          <qti-template-declaration identifier="RESULT" cardinality="single" base-type="boolean"/>
-          <qti-template-processing>
-            <qti-set-template-value identifier="RESULT">
-              <qti-substring>
-                <qti-base-value base-type="string">Hello World</qti-base-value>
-                <qti-base-value base-type="string">hello</qti-base-value>
-              </qti-substring>
-            </qti-set-template-value>
-          </qti-template-processing>
-          <qti-item-body><p>Test</p></qti-item-body>
-        </qti-assessment-item>`;
-
-      const itemDoc = parser.parseFromString(xml, 'text/xml');
-      const state = initializeState(itemDoc);
-
-      expect(state.variables.RESULT).toBe(true);
-    });
-
     test('evaluates qti-pattern-match operator', () => {
       const xml = `<?xml version="1.0" encoding="UTF-8"?>
         <qti-assessment-item xmlns="http://www.imsglobal.org/xsd/imsqtiasi_v3p0"