Rubric builder
Build weighted criteria, pick a scale and score the work — and see what your scale really rewards. Prints as a clean scoring sheet.
The most common rubric scale, and the one with the surprise: its floor is 25%.
Weights are relative — 3/3/2/1 and 30/30/20/10 score identically.
Result
This scale floors at 25% — a student who earns the lowest level on every criterion still scores that much, and only 75 of the 100 points are reachable. Put the bottom level at 0 to open the full range.
| Criterion | Exemplary4 pts | Proficient3 pts | Developing2 pts | Beginning1 pt |
|---|---|---|---|---|
| Thesis & focusweight 3 | ● | ○ | ○ | ○ |
| Evidence & supportweight 3 | ○ | ● | ○ | ○ |
| Organizationweight 2 | ○ | ● | ○ | ○ |
| Mechanics & styleweight 1 | ○ | ○ | ● | ○ |
How is this calculated?
Using the tool
Build the criteria, weight them, pick a scale and score the work — then read the part no rubric template prints: what your scale's floor really is, what “proficient everywhere” actually earns, and how much of the 0–100 range you left on the table. The grid prints as a clean scoring sheet.
The math
A rubric is a scoring function, and every scoring function has a range. Each criterion contributes its weight times the points of the level you marked, out of its weight times the top level — so weights are relative and the arithmetic is the same weighted average a course grade uses. The part that hides in plain sight is the floor: on the classic 4·3·2·1 scale the lowest level is still worth a quarter of the highest, so the worst possible performance scores 25% and proficient on everything scores 75% — a C for work you called proficient. Neither number is wrong, but both are choices, and most rubrics make them by accident. Move the bottom level to 0 and the range opens to the full 100; map the levels onto percent bands instead and proficient lands where you meant it to.