| In-text commenting |
✅ Inline comments with bubble annotations |
✅ Inline comments with bubble annotations - functionally equivalent |
| Comment library |
✅ QuickMark comment sets (customisable, reusable) |
✅ Feedback comment library (customisable, reusable) - same functionality |
| Multiple Files |
❌ Turnitin only allows single file submissions |
✅ Blackboard Assignment can accept multiple file submissions |
| File Size |
⚠️ Turnitin maximum file size is 100Mb |
✅ Blackboard Assignment no max file size limit |
| Rubric integration |
✅ Can link comments to rubric criteria |
✅ Can link comments to rubric criteria - identical capability |
| Rubric grading |
✅ Side-by-side rubric panel |
✅ Side-by-side rubric panel with same functionality. Blackboard rubrics allow for scale ranges for criteria, allowing more flexibility in scoring within a range. |
| Voice/video feedback |
✅ Voice comments and video feedback available |
✅ Voice comments and video feedback available |
| Annotation tools |
✅ Highlighters, strikethrough, drawing tools |
✅ Highlighters, strikethrough, drawing tools - equivalent set |
| PDF annotation |
✅ Native PDF markup |
✅ Native PDF markup - equivalent |
| Multiple file formats |
✅ Supports various formats |
✅ Supports a wider range of file formats |
| Similarity detection |
✅ Similarity Report (paid additional feature) |
✅ SafeAssign (included, no additional cost) |
| Group assignments |
❌ No native group assignment support |
✅ Full group assignment workflow with individual or group grading options |
| Anonymous/blind marking |
✅ Built-in anonymous marking with workflow limitations |
✅ Built-in anonymous marking with workflow limitations |
| Multiple attempts |
⚠️ Limited, awkward workflow |
✅ Full support for multiple submission attempts with version tracking up to the submission deadline |
| Draft submissions |
❌ Not supported |
✅ Students can save drafts before final submission |
| Batch download |
✅ Available with feedback |
✅ Available with feedback |
| Accommodations |
⚠️ Can set individual due dates within Turnitin interface; less integrated with Blackboard student management |
✅ Built-in exceptions for individual students (extended due dates, additional attempts, time limits); managed directly from gradebook or student overview |
| Late submission tracking |
⚠️ Basic timestamp |
✅ Automatic late flagging with configurable grace periods |
| Gradebook integration |
⚠️ External sync required (can be unreliable) |
✅ Seamless, real-time gradebook integration |
| Marking workflow |
⚠️ External LTI tool, separate window/tab outside of the Blackboard environment |
✅ Fully integrated within Blackboard Ultra interface |
| Mobile marking |
⚠️ No mobile marking now possible |
✅ Full mobile app marking capability |
| Offline marking |
❌ Requires connection to Turnitin servers |
✅ Can download, mark offline, re-upload |