Convert a YAML gradebook to JSON: quick checklist

Need to move a classroom gradebook from YAML into an app that accepts JSON? Convert the file, then check the values that could change meaning, especially student IDs, scores, and blank cells.

The Data Converter converts YAML to JSON in your browser. Keep the original YAML file, and review the converted output before importing it into a gradebook or sharing it.

Convert the YAML file to JSON

1. Open the converter. Use the Data Converter and set YAML as the input format and JSON as the output format.
2. Load the gradebook data. Open the YAML file in the converter. If you are working from text, use the converter's text input if available. Make sure the content is the gradebook file you intend to convert.
3. Check that the YAML can be read. If the converter reports a parsing error, do not treat partial or empty output as a finished conversion. Check the line and character mentioned in the error, then correct the source or simplify the YAML structure.
4. Convert to JSON. Review the output before saving it. JSON uses double quotes around property names and text values, and it does not allow comments or a comma after the last item in a list or object.
5. Save a separate copy. Give the result a clear name such as class-gradebook.json. Keep the YAML original unchanged so you can compare or convert it again if needed.
6. Open the saved JSON. Check that it is not empty and that the first and last parts of the file look complete. If the destination app has a preview or test-import option, use it before replacing an existing gradebook.

The conversion changes the data format, not the accuracy of the grades. A successful conversion means the data could be read and represented as JSON. It does not prove that every value means what the gradebook app expects.

Check the values that matter in a gradebook

YAML and JSON can represent similar information, but plain-looking YAML values may be interpreted as numbers, dates, booleans, or empty values. Compare the converted result with the source, especially for these fields:

• Student IDs. Treat IDs as text, not arithmetic values. An ID such as 00123 can lose its leading zeros if interpreted as a number. In the YAML source, quote identifiers that must remain exact, for example student_id: "00123".
• Scores. Keep scores as numbers if the destination app expects numeric values for calculations. A quoted score such as "87" is text, which some apps may not add or average like the number 87.
• Missing work. A blank field, an empty string, a null value, and a field that is absent can mean different things. For example, score: may be read as null, while score: "" is an empty string. Preserve the meaning your gradebook uses for missing or ungraded work.
• Names and notes. Look for punctuation, apostrophes, accented letters, line breaks, and comments. YAML comments are not data, so they will not appear in the JSON output. Text that belongs in a student note should be a value, not a comment.
• Dates and yes-or-no values. Quote values that must stay literal text, such as a course label or a date written in a particular format. YAML parsers can interpret some plain values as dates or booleans, and JSON will reflect the type the parser assigned.

Check that the JSON structure matches the app

JSON represents data using objects, arrays, strings, numbers, booleans, and null. A gradebook might use an array of student records, with each record containing a name, ID, and grades. A different app may expect a particular field name or nesting pattern. Conversion preserves the source structure as far as the data formats allow, but it does not redesign the file to match a specific app's import template.

Compare one complete student record in the YAML with its JSON version. Confirm that each grade is attached to the right assignment and student, and that lists remain lists rather than becoming separate records in an unexpected order. If the target app provides a required template, compare field names and structure with that template before importing.

Fix common conversion problems

The converter reports an error

Check indentation first. YAML uses spaces to show which values belong inside a list or object, so a misplaced line can prevent the file from parsing. Also check for tabs, missing colons, unclosed quotation marks, and special YAML features such as anchors or custom tags. If a complex construct is not accepted, replace it with ordinary lists and key-value pairs in a copy of the file, then try again.

The JSON has the right rows but wrong-looking values

Check whether an ID lost leading zeros, a score became text, or an empty field changed to null. Correct the YAML source when possible, then convert again. Avoid repairing a large gradebook by hand unless you can compare every change with the original.

Names or notes contain quotation marks or line breaks

JSON must escape certain characters inside strings. The converter should handle this when it converts valid input. Do not remove punctuation just to make the file look simpler. Instead, check that the converted text still matches the source and that the JSON remains valid.

Review the file before using it

1. Compare counts. Check that the converted file contains the expected number of students, assignments, and grade entries.
2. Check a sample against the original. Compare several records, including one with a leading-zero ID, a missing score, and a note with punctuation if those occur in the file.
3. Use a test import if available. Review the destination app's preview or import summary and make sure records land in the correct fields before committing the import.
4. Keep a backup. Save the original YAML and a copy of the JSON separately until you have confirmed that the imported gradebook is correct.

The converter processes files in your browser, so the gradebook file stays on your device rather than being uploaded. Still, avoid displaying student records on a shared screen or leaving a classroom computer unlocked while the file is open.