Edit Gradebook CSV Files Online for Teachers

Learning management systems let you export gradebooks as CSV files — but editing those files in Excel often introduces formatting problems. Student IDs get converted to scientific notation. Assignment column headers break. Date formats change unexpectedly. When you re-import the file, your LMS rejects it.

This CSV editor is designed for clean, reliable CSV editing. Upload your gradebook export, make your corrections in a simple spreadsheet view, and download a properly formatted CSV ready for import. No auto-formatting surprises, and no student data ever leaves your browser.

Teachers and instructors frequently need to edit gradebook data outside of their LMS. Common scenarios include: adjusting grades after a re-grade or curve, merging grades from external assessments or third-party tools, preparing grade data for department reports, fixing import errors from student information systems, and creating custom grade exports for advisors or administrators.

The challenge with standard spreadsheet software is auto-formatting. Excel notoriously converts student IDs to numbers (dropping leading zeros or switching to scientific notation), changes date formats, and modifies numeric precision. These changes cause import failures and data corruption when the file returns to the LMS.

This tool treats all data as text by default, preserving student IDs, dates, and numeric values exactly as they appear in the original export.