diff --git a/src/schedule-and-details/introducing-section/contentTypeUtils.test.ts b/src/schedule-and-details/introducing-section/contentTypeUtils.test.ts
new file mode 100644
index 0000000000..c818a1827f
--- /dev/null
+++ b/src/schedule-and-details/introducing-section/contentTypeUtils.test.ts
@@ -0,0 +1,234 @@
+/**
+ * Tests for content type detection utilities
+ */
+import { containsHtml, determineEditorType, type EditorType } from './contentTypeUtils';
+
+describe('contentTypeUtils', () => {
+  describe('containsHtml', () => {
+    describe('should return false for non-HTML content', () => {
+      test.each([
+        ['empty string', ''],
+        ['null', null],
+        ['plain text', 'This is just plain text'],
+        ['text with special characters', 'Text with @#$%^&*()'],
+        ['text with quotes', 'Text with "quotes" and \'apostrophes\''],
+        ['text with newlines', 'Line 1\nLine 2\nLine 3'],
+        ['text with angle brackets but not HTML', '5 < 10 and 10 > 5'],
+        ['mathematical expressions', 'x = y < z > w'],
+      ] as const)('for %s', (_description: string, input: string | null) => {
+        expect(containsHtml(input)).toBe(false);
+      });
+    });
+
+    describe('should return true for HTML content', () => {
+      test.each([
+        // Basic HTML tags
+        ['simple paragraph', '<p>Hello world</p>'],
+        ['heading tag', '<h1>Title</h1>'],
+        ['div element', '<div>Content</div>'],
+        ['span element', '<span>Text</span>'],
+        ['self-closing tag', '<br />'],
+        ['self-closing without space', '<br/>'],
+
+        // HTML tags with attributes
+        ['tag with class', '<p class="intro">Text</p>'],
+        ['tag with id', '<div id="content">Text</div>'],
+        ['tag with multiple attributes', '<a href="link" target="_blank">Link</a>'],
+
+        // Mixed case HTML
+        ['uppercase tag', '<P>Paragraph</P>'],
+        ['mixed case tag', '<DiV>Content</DiV>'],
+
+        // HTML with content
+        ['nested tags', '<div><p>Nested paragraph</p></div>'],
+        ['multiple tags', '<h1>Title</h1><p>Paragraph</p>'],
+        ['formatting tags', 'Text with <strong>bold</strong> and <em>italic</em>'],
+
+        // Complex HTML structures
+        ['list structure', '<ul><li>Item 1</li><li>Item 2</li></ul>'],
+        ['table structure', '<table><tr><td>Cell</td></tr></table>'],
+        ['form elements', '<input type="text" name="field">'],
+        ['image tag', '<img src="image.jpg" alt="Image">'],
+
+        // HTML entities
+        ['named entities', 'Price: $100 &amp; free shipping'],
+        ['more entities', 'Copyright &copy; 2024 &ndash; All rights reserved'],
+        ['quotes entity', 'He said &quot;Hello&quot; to me'],
+        ['numeric entities', 'Special char: &#8364; &#169;'],
+
+        // HTML with text content
+        ['HTML in mixed content', 'Introduction: <p>This is the main content.</p> End.'],
+        ['multiple entities', 'A &amp; B &lt; C &gt; D'],
+
+        // Edge cases
+        ['unclosed tag', '<p>Unclosed paragraph'],
+        ['tag with newlines', '<p>\nMultiline\ncontent\n</p>'],
+      ] as const)('for %s', (_description: string, input: string) => {
+        expect(containsHtml(input)).toBe(true);
+      });
+    });
+
+    describe('edge cases', () => {
+      test('should handle very long content', () => {
+        const longText = 'a'.repeat(10000);
+        expect(containsHtml(longText)).toBe(false);
+
+        const longHtml = `<p>${longText}</p>`;
+        expect(containsHtml(longHtml)).toBe(true);
+      });
+
+      test('should handle content with only whitespace', () => {
+        expect(containsHtml('   \n\t   ')).toBe(false);
+      });
+    });
+  });
+
+  describe('determineEditorType', () => {
+    describe('should return "text" for non-HTML content', () => {
+      test.each([
+        ['empty string', ''],
+        ['null', null],
+        ['plain text', 'This is just plain text content'],
+        ['long plain text', 'Lorem ipsum '.repeat(100)],
+        ['text with special chars', 'Email: test@example.com, Phone: (555) 123-4567'],
+        ['mathematical content', '2 + 2 = 4, x < y, a > b'],
+        ['code-like content', 'function() { return value < threshold; }'],
+      ] as const)('for %s', (_description: string, input: string | null) => {
+        expect(determineEditorType(input)).toBe('text');
+      });
+    });
+
+    describe('should return "html" for HTML content', () => {
+      test.each([
+        // Simple HTML
+        ['basic paragraph', '<p>Simple paragraph</p>'],
+        ['heading', '<h2>Section Title</h2>'],
+        ['formatted text', 'Text with <strong>bold</strong> formatting'],
+
+        // Complex HTML structures
+        ['nested elements', '<div class="intro"><h2>Title</h2><p>Content</p></div>'],
+        ['lists', '<ul><li>First item</li><li>Second item</li></ul>'],
+        ['tables', '<table><tr><td>Cell 1</td><td>Cell 2</td></tr></table>'],
+        ['links and images', '<a href="/link"><img src="image.jpg" alt="Image"></a>'],
+
+        // Course content examples
+        ['course overview', '<div><h3>Course Overview</h3><p>This course covers...</p><ul><li>Topic 1</li></ul></div>'],
+        ['about sidebar', '<div class="sidebar"><h4>About</h4><p>Prerequisites: None</p></div>'],
+
+        // HTML entities
+        ['content with entities', 'Price: $100 &amp; includes shipping &ndash; 50% off!'],
+        ['mixed content', 'Introduction <p>Main content with &copy; symbol</p> conclusion'],
+      ] as const)('for %s', (_description: string, input: string) => {
+        expect(determineEditorType(input)).toBe('html');
+      });
+    });
+
+    describe('integration scenarios', () => {
+      test('should handle real course overview content', () => {
+        const courseOverview = `
+          <div class="course-overview">
+            <h2>Introduction to Computer Science</h2>
+            <p>This course provides a comprehensive introduction to computer science concepts.</p>
+            <h3>What You'll Learn:</h3>
+            <ul>
+              <li>Programming fundamentals</li>
+              <li>Data structures and algorithms</li>
+              <li>Software engineering practices</li>
+            </ul>
+            <p><strong>Prerequisites:</strong> Basic mathematics knowledge</p>
+            <p><em>Duration:</em> 12 weeks</p>
+          </div>
+        `;
+
+        expect(containsHtml(courseOverview)).toBe(true);
+        expect(determineEditorType(courseOverview)).toBe('html');
+      });
+
+      test('should handle sidebar HTML content', () => {
+        const sidebarHtml = `
+          <div class="about-sidebar">
+            <h4>Course Information</h4>
+            <p><strong>Instructor:</strong> Dr. Smith</p>
+            <p><strong>Credits:</strong> 3</p>
+            <p><strong>Format:</strong> Online &amp; In-person</p>
+            <a href="/syllabus">Download Syllabus</a>
+          </div>
+        `;
+
+        expect(containsHtml(sidebarHtml)).toBe(true);
+        expect(determineEditorType(sidebarHtml)).toBe('html');
+      });
+
+      test('should handle plain text course descriptions', () => {
+        const plainDescription = 'A beginner-friendly course covering the basics of programming. No prior experience required.';
+
+        expect(containsHtml(plainDescription)).toBe(false);
+        expect(determineEditorType(plainDescription)).toBe('text');
+      });
+
+      test('should handle empty or minimal content', () => {
+        expect(determineEditorType('')).toBe('text');
+        expect(determineEditorType(' ')).toBe('text');
+        expect(determineEditorType(null as any)).toBe('text');
+        expect(determineEditorType(undefined as any)).toBe('text');
+      });
+    });
+
+    describe('type safety', () => {
+      test('should return correct EditorType', () => {
+        const result: EditorType = determineEditorType('<p>Test</p>');
+        expect(result).toBe('html');
+
+        const result2: EditorType = determineEditorType('Plain text');
+        expect(result2).toBe('text');
+      });
+    });
+
+    describe('performance considerations', () => {
+      test('should handle very large content efficiently', () => {
+        const largeContent = 'This is a large text content. '.repeat(1000);
+        const start = Date.now();
+        const result = determineEditorType(largeContent);
+        const end = Date.now();
+
+        expect(result).toBe('text');
+        expect(end - start).toBeLessThan(100); // Should complete in under 100ms
+      });
+
+      test('should handle large HTML content efficiently', () => {
+        const largeHtml = `<div>${'<p>Paragraph content. </p>'.repeat(1000)}</div>`;
+        const start = Date.now();
+        const result = determineEditorType(largeHtml);
+        const end = Date.now();
+
+        expect(result).toBe('html');
+        expect(end - start).toBeLessThan(100); // Should complete in under 100ms
+      });
+    });
+  });
+
+  describe('function integration', () => {
+    test('containsHtml and determineEditorType should be consistent', () => {
+      const testCases: Array<unknown> = [
+        'Plain text',
+        '<p>HTML content</p>',
+        'Text with &amp; entities',
+        '',
+        null,
+        undefined,
+        '<div><h1>Complex</h1><p>HTML</p></div>',
+      ];
+
+      testCases.forEach((content) => {
+        const hasHtml = containsHtml(content as any);
+        const editorType = determineEditorType(content as any);
+
+        if (hasHtml) {
+          expect(editorType).toBe('html');
+        } else {
+          expect(editorType).toBe('text');
+        }
+      });
+    });
+  });
+});
diff --git a/src/schedule-and-details/introducing-section/contentTypeUtils.ts b/src/schedule-and-details/introducing-section/contentTypeUtils.ts
new file mode 100644
index 0000000000..31ada1498c
--- /dev/null
+++ b/src/schedule-and-details/introducing-section/contentTypeUtils.ts
@@ -0,0 +1,46 @@
+/**
+ * Utility functions for detecting content type and
+ * determining appropriate editor type for TinyMCE editor
+ */
+
+// Define the supported editor types
+export type EditorType = 'text' | 'html';
+
+/**
+ * Detects if content contains HTML tags
+ * @param content - The content to analyze
+ * @returns True if content contains HTML tags
+ */
+export const containsHtml = (content: string | null): boolean => {
+  if (!content) {
+    return false;
+  }
+
+  // Check for common HTML patterns
+  const htmlPatterns: RegExp[] = [
+    /<\/?[a-z][\s\S]*>/i, // HTML tags
+    /&[a-z]+;/i, // HTML entities
+    /&#\d+;/, // Numeric entities
+  ];
+
+  return htmlPatterns.some((pattern) => pattern.test(content));
+};
+
+/**
+ * Determines the appropriate editor type based on content analysis
+ * @param content - The content to analyze
+ * @returns The recommended editor type ('text' or 'html')
+ */
+export const determineEditorType = (content: string | null): EditorType => {
+  if (!content) {
+    return 'text';
+  }
+
+  // If content contains HTML, use html editor for better HTML editing
+  if (containsHtml(content)) {
+    return 'html';
+  }
+
+  // For plain text content, use text editor
+  return 'text';
+};
diff --git a/src/schedule-and-details/introducing-section/index.jsx b/src/schedule-and-details/introducing-section/index.jsx
index 32e8e21c55..71e7bdccd7 100644
--- a/src/schedule-and-details/introducing-section/index.jsx
+++ b/src/schedule-and-details/introducing-section/index.jsx
@@ -11,6 +11,7 @@ import { WysiwygEditor } from '../../generic/WysiwygEditor';
 import SectionSubHeader from '../../generic/section-sub-header';
 import IntroductionVideo from './introduction-video';
 import ExtendedCourseDetails from './extended-course-details';
+import { determineEditorType } from './contentTypeUtils';
 import messages from './messages';
 
 const IntroducingSection = ({
@@ -112,6 +113,7 @@ const IntroducingSection = ({
             <Form.Label>{intl.formatMessage(messages.courseOverviewLabel)}</Form.Label>
             <WysiwygEditor
               initialValue={overview}
+              editorType={determineEditorType(overview)}
               onChange={(value) => onChange(value, 'overview')}
             />
             <Form.Control.Feedback>{overviewHelpText}</Form.Control.Feedback>
@@ -121,6 +123,7 @@ const IntroducingSection = ({
               <Form.Label>{intl.formatMessage(messages.courseAboutSidebarLabel)}</Form.Label>
               <WysiwygEditor
                 initialValue={aboutSidebarHtml}
+                editorType={determineEditorType(aboutSidebarHtml)}
                 onChange={(value) => onChange(value, 'aboutSidebarHtml')}
               />
               <Form.Control.Feedback>{aboutSidebarHelpText}</Form.Control.Feedback>