BYTETOOLS

Standards-Based Grading Converter

Convert 1-4 proficiency levels into percentages and letter grades, combining repeated attempts by most recent, decaying average, mode, mean or highest.

Standards and attempts

List the proficiency levels for each standard oldest first, separated by commas. Standards with no attempts yet are left out of the calculation.

2
Standards scored
80%
Overall percentage
B
Overall letter

Standard by standard

StandardAttemptsCombined levelPercentGrade
Solves multi-step equations2, 3, 3385%B
Interprets graphs1, 2275%C

Levels that fall between two rows of the conversion table are interpolated, so a decaying average of 3.53 sits proportionally between the percentages you set for 3.5 and 4.

Standards-based grading deliberately resists a single conversion: the whole point of reporting proficiency levels is that they say something a percentage cannot. Districts that do convert publish their own table and their own rule for repeated attempts, which is why both are editable here rather than fixed. Everything is calculated in your browser and no student data is uploaded.

What is the Standards-Based Grading Converter?

A standards-based grading converter maps proficiency levels to percentages using a district conversion table, combining several attempts on one standard by a chosen rule such as most recent, mode, or a decaying average weighting the newest score 65 percent.

  • Five aggregation rules including the 65/35 decaying average used by common gradebooks
  • Editable level-to-percentage conversion rather than one hardcoded district table
  • Editable percentage-to-letter cutoffs for the final grade
  • Interpolation between table rows so decimal levels convert proportionally
  • Per-standard breakdown showing attempts, combined level, percentage and letter
  • Standards with no attempts yet are skipped instead of counting as zero

How to use the Standards-Based Grading Converter

  1. 1

    Choose how repeated attempts on one standard should be combined.

  2. 2

    Add a row for each standard and list its proficiency levels oldest first.

  3. 3

    Edit the level-to-percentage table to match the one your district publishes.

  4. 4

    Adjust the percentage-to-letter cutoffs to match your gradebook.

  5. 5

    Read the per-standard table and the overall percentage and letter grade.

About the Standards-Based Grading Converter

The ByteTools Standards-Based Grading Converter bridges proficiency levels and a traditional gradebook. List each standard with the levels a student has earned on it, choose how repeated attempts should be combined, and the page converts the result into a percentage and letter grade for every standard plus an overall figure.

Five aggregation rules are available because schools genuinely disagree about this: most recent attempt, a decaying average that weights the newest score 65 percent against 35 percent for everything before it, the mode, the mean, or the highest attempt. Each produces a different answer from the same evidence, which is worth seeing side by side.

The level-to-percentage table and the letter cutoffs are both editable, since there is no national standard for either. Levels between two rows are interpolated rather than snapped, so a decaying average of 2.88 lands proportionally. Everything is calculated in your browser and no student data is uploaded.

Frequently asked questions

How does a decaying average work in standards-based grading?

Each new score is weighted 65 percent and the running average of everything before it 35 percent. Scores of 3, then 4, then 5 give 3, then 3.65, then 4.53, so recent evidence dominates without older attempts vanishing entirely.

What does a 3 out of 4 mean in standards-based grading?

On a typical four-point scale a 3 means proficient — the student meets the standard as written. A 4 means they exceed it, a 2 is developing and a 1 is beginning. The exact wording varies by district.

How do you convert a proficiency level to a percentage?

With a conversion table your district publishes, such as 4 equals 100, 3 equals 85 and 2 equals 75. There is no universal mapping, which is why the table on this page is an editable field rather than a fixed scale.

Should the most recent score replace earlier ones?

It depends on your grading policy. Most-recent scoring reflects the belief that learning is what matters at the end, while a decaying average keeps some weight on the pattern of attempts. Both are offered here so you can compare them.

Why do standards-based grades resist conversion to percentages?

Because proficiency levels are meant to describe what a student can do, which a single percentage cannot capture. Any conversion loses information, so treat the output as a reporting requirement rather than a truer measure.

Is student data uploaded anywhere?

No. Standard names, attempt levels and the conversion tables all stay in your browser tab and are processed there. Nothing is transmitted to a server, so the page is safe to use with real gradebook data.

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