A lot of teachers drop your lowest homework score so that one bad week does not follow you to the end of term. This calculator lets you see what your average looks like with the bottom one or two scores taken out, which is usually the number you actually care about.
It is for the moment you have five scores in front of you and one of them is a 40 you handed in at 3am. Type them in, tell it how many to drop, and it does the sum on what is left. No gradebook, no login, nothing sent anywhere.
Honest detail: this is a simple average of the numbers you enter, not a weighted one. If your course says the final essay is worth 30% and the weekly quizzes are worth 5% each, this tool treats all of them as equal. Read the result as “average of my scores”, not “my grade”.
Enter your homework scores and choose how many of the lowest scores to drop. This calculator removes the lowest N scores and computes your average from the remaining assignments. You can drop 0, 1, or 2 scores.
How it works
One text field takes your scores separated by commas: 85, 92, 78, 95, 88. Spaces are fine, blanks between commas are ignored, and anything that is not a number between 0 and 100 gets called out by position, like score #3, so you can spot the typo rather than wonder why the total is strange.
The dropdown picks how many of the lowest to remove: 0, 1 or 2. Zero keeps everything, one takes the single worst score, two takes the worst pair. Then the list is sorted from low to high, the chosen number comes off the front, and the rest are summed and divided.
The answer comes back as a bold Homework Average: 90.0%, followed by a line saying how many assignments were counted and which scores were dropped, then your original list so you can confirm nothing vanished by accident. Reset clears the field and puts the dropdown back to zero.
A worked example
The classic set: 85, 92, 78, 95, 88. All five counted, the total is 438, and the average is 87.6%. Drop the lowest one and the 78 goes, leaving 360 across four scores for 90.0%. Drop two and both 78 and 85 go, leaving 275 across three for 91.7%.
Now an outlier. Scores of 100, 0, 90 average 63.3%, which looks alarming. Remove the zero and the remaining two average 95.0% – a 31.7 point swing from dropping one number. That is the case where the policy genuinely saves your term.
Compare that with 88, 88, 88, which stays 88.0% whether you drop nothing, one or two. Dropping the lowest can only push your average up or leave it exactly where it was, never down, and when your scores are tight it does almost nothing. If you try to drop 2 scores out of 2 it refuses and tells you how many you actually have.
When dropping will not save you
Check the syllabus first. Some courses drop the lowest one of ten, some drop the lowest 10%, some drop nothing at all, and a few only drop scores from the first half of term. The written policy wins over this calculator every time, because this one will happily model a drop your teacher never offered.
Watch for double counting too. Most learning systems already apply the drop before you ever see the grade, so pulling another low score out by hand is dropping the same assignment twice. If your portal already shows a homework average, this tool is for working out what happens next, not for re-doing what it did.
And remember the weighting problem. A quiz worth 5% and a project worth 30% are the same row here, so a high score on a small task can make the picture look rosier than the gradebook will. Use this to understand the shape of your scores, then check the weighted total in your course portal before you relax.
Other tools
- Honours GPA Requirement — what the rest of your degree has to average
- IB Predicted Points — turn component marks into a predicted total
- IELTS Band Calculator — average four module scores into an overall band
Frequently asked questions
How many scores can I drop?
Zero, one or two. Those are the options in the dropdown, and two is enough for most policies you will meet. If your course drops three or more, delete those scores from the list yourself and calculate on what remains.
Does dropping the lowest always help?
It helps or does nothing, never hurts. You are removing the smallest number, so the mean of what is left can only sit at or above where it started. Identical scores is the case where nothing changes at all.
What if I have fewer scores than I want to drop?
It stops you with a message giving both numbers, because dropping two scores out of two would leave an empty average. Enter at least one more score than the number you are dropping, so there is something left to divide.
Does it handle weighted assignments?
No. Every score counts the same, so it is a plain mean. Where assignments carry different weights, use it as a rough view only and take the real figure from your portal, which knows what each task was worth.
Can I enter scores as percentages or points?
As long as they are between 0 and 100, either. A 18 out of 20 quiz needs converting first, so enter 90 rather than 18, otherwise a perfectly good mark gets flagged as invalid.