When the Grade Calculator seems to misbehave, the cause is usually one of two things: something stopped the tool from running, or it ran but the result is not usable. This guide starts with the fastest checks, then walks through the common problems and exact fixes.
Quick Checks First
- Refresh the page - a stalled session is the most common cause of nothing happening.
- Confirm the input is not empty and actually contains what you meant to submit.
- Try the smallest possible input; if that works, the issue is size, not the tool.
- Turn off browser extensions that block scripts, then reload and test again.
- Update or switch browsers if the problem repeats across sessions.
Common Problems and How to Fix Them
The weights do not sum to 100.
Normalise them yourself first or adjust to 100 - skewed weights produce a skewed grade.
The result differs from my spreadsheet.
Flat averages ignore weights - confirm your sheet multiplies each score by its weight before dividing.
My syllabus drops the lowest quiz.
Remove dropped items before calculating - the tool averages what you enter, nothing more.
What grade do I need on the final?
Subtract the earned portion from 100 and divide by the final weight - run a scenario with a placeholder score.
Extra credit points seem ignored.
Add them into the relevant category score before calculating, matching how your teacher applies them.
Does it store my scores?
No - the calculation runs in your browser and nothing is saved.
When It Works but the Output Is Poor
If the tool runs fine but the result misses, the problem is almost always the brief, not the software:
- Weights not adding to 100
- Averaging percentages flat
- Forgetting dropped scores
- Assuming extra credit is automatic
How to Stop It Happening Next Time
- Keep a saved prompt template for every task you repeat.
- Change one setting per generation so causes stay obvious.
- Run a two-minute sanity test with known input after any update.
- Note every failure and its fix; a short troubleshooting log pays for itself.
Still Stuck?
Reproduce the problem with the smallest possible input and note the exact steps that triggered it. A one-line description of what you did, what you expected and what happened is enough to get a precise answer from support or a colleague.
Frequently Asked Questions
How does the weighted average work?
Each score is multiplied by its weight; the products are summed and divided by the total weight.
What if my weights are not out of 100?
The tool normalises any total - weights of 20, 30 and 50 or 2, 3 and 5 give the same result.
Can I plan for a target grade?
Yes - enter a placeholder for the remaining work and adjust until the overall hits your target.
Are my scores stored?
No - everything stays in your browser.
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