Child pages
• Custom Expression Examples

Page History

Key

• This line was added.
• This line was removed.
• Formatting was changed.

...

Add the count of teachers to the count of students.

Code Block

[Distinct Count: Teacher ID] + [Distinct Count: Student ID]

...

Take the average test score and apply the round(x, p) function, setting the precision p equal to 2.

Code Block

round([Average: Test Score], 2)

...

Tip

When an expression contains multiple lines, the expression that appears on the last line (in this example, the line round(overallAverage, 2)) will be the final result returned.

Code Block

dim1Total = [Total: Dimension 1 Score];
dim2Total = [Total: Dimension 2 Score];
dim3Total = [Total: Dimension 3 Score];
dim4Total = [Total: Dimension 4 Score];
dim5Total = [Total: Dimension 5 Score];

overallTotal = sum(dim1Total, dim2Total, dim3Total, dim4Total, dim5Total);
overallCount = [Count: Session ID];

overallAverage = overallTotal / overallCount;

round(overallAverage, 2)

...

The number of students divided by the number of teachers. Distinct counts must be used here if the data contains more than one row per student or teacher.

Code Block

[Distinct Count: Student ID] / [Distinct Count: Teacher ID]

...

Use variables to hold the average of each of the dimensional scores. Use min(...) function to find the lowest dimensional score. Use nested if (cond, trueValue, falseValue) blocks to return which dimension matches the lowest score. Note: If more than one dimension shares the same lowest score, this only returns the first dimension found.

Code Block

dim1Avg = [Average: Dimension 1 Score];
dim2Avg = [Average: Dimension 2 Score];
dim3Avg = [Average: Dimension 3 Score];
dim4Avg = [Average: Dimension 4 Score];
dim5Avg = [Average: Dimension 5 Score];

lowestScore = min(dim1Avg, dim2Avg, dim3Avg, dim4Avg, dim5Avg);

result = if (dim5Avg == lowestScore, "Dimension 5", "Unknown");
result = if (dim4Avg == lowestScore, "Dimension 4", result);
result = if (dim3Avg == lowestScore, "Dimension 3", result);
result = if (dim2Avg == lowestScore, "Dimension 2", result);
result = if (dim1Avg == lowestScore, "Dimension 1", result);

...

Use a variable to record the student-teacher ratio. Then set variables to mark the points at which the ratio is considered medium or high. Finally, use two if (cond, trueValue, falseValue) blocks to return the "Low", "Medium" or "High" text based on the ratio value.

Code Block

stRatio = [Distinct Count: Student ID] / [Distinct Count: Teacher ID];
mediumThreshold = 20;
highThreshold = 40;

if (stRatio < mediumThreshold,
"Low",
if (stRatio >= highThreshold,
"High",
"Medium"
)
)

...

This example is the same as above, but applies green, red, and yellow colors to the text. It also makes the word "High" appear in bold formatting.

Code Block

stRatio = [Distinct Count: Student ID] / [Distinct Count: Teacher ID];
mediumThreshold = 20;
highThreshold = 40;

if (stRatio < mediumThreshold,
"<span style=\"color:green\">Low</span>",
if (stRatio >= highThreshold,
"<span style=\"color:red;font-weight:bold\">High</span>",
"<span style=\"color:yellow\">Medium</span>"
)
)

...

Compare the average score of the 1st essay submission to what the desired proficiency level (e.g. 4). Then use an if (cond, trueValue, falseValue) block to return the text "Below" if the average score is less than 4, or to return "Above" if the score is equal to or greater than 4.

Code Block

profLevel = 4;

if ([Average: Essay 1st Submission Score] < 4,
"Below",
"Above"
);

Example: Indicate Benchmark Levels Using Percent Score

Use a variable to record the percent score. Then set variables to mark the points at which the benchmark level is considered a 1 or higher. Finally, use an if (cond, trueValue, falseValue) blocks to return the 1, 2, 3, 4 values text based on the benchmark level value.

Code Block
score= [Average: Objective Percent Score];
b1=25;
b2=50;
b3=75;
b4=100;
if(score<=b1,"1",if(score<=b2,"2",if(score<=b3,"3",if(score<=b4,"4","N/A"))))
;

Example: Indicate whether the proficiency level has "Improved", remained "Unchanged", or "Got Worse" from the first essay submission compared to the most recent.

Use a variable to set the desired proficiency level (e.g. 4). Then create two variables, before and after which indicate the proficiency level of the 1st essay submission and most recent submission, respectively. Finally, use nested conditional blocks to return "Improved" if the proficiency went from "Below" to "Above", "Unchanged" if it remained the same, or "Got Worse" if it went from "Above" to "Below".

Code Block

profLevel = 4;

before = if ([Average: Essay 1st Submission Score] < profLevel,
"Below",
"Above"
);

after = if ([Average: Essay Most Recent Score] < profLevel,
"Below",
"Above"
);

if (before  == "Below" && after == "Above",
"Improved",
if (before == "Above" && after == "Below",
"Got Worse",
"Unchanged"
)
)

...

Tip
title Referring to Other Reports

By default, metrics used within a custom expression always use the current report as a filter of the data. However, by qualifying the metric with the name of a report, you can force the filters of that report to be applied when calculating the metric.

For example, this represents the average score within the current report:

Code Block

[Average: Score]

This represents the average score in the state of Utah, regardless of what the current report is: (assuming there is a report named "Utah Students")

Code Block

[Average: Utah Students: Score]

...

Note
title Be careful of what filters are being compared.

In this example, countOfMyStudents refers to all students within the current report. Keep in mind that the Proficient Students report may only be applying a filter against the Score field. Therefore, if you apply this expression to a report named Utah Students, but the Proficient Students report does not also filter by Utah, then you will be comparing the number of Utah students to all Proficient students. Currently, the solution is to create a Utah Proficient Students report.

Code Block

countOfProficientStudents = [Distinct Count: Proficient Students: Student ID];
countOfMyStudents = [Distinct Count: Student ID];
percentageProficient = round(countOfProficientStudents / countOfMyStudents * 100, 2)

...

For example, if currently 20% of students are proficient, and our goal is 80%, we could say we are 25% of the way to our goal (that is, 20 / 80).

Code Block

countOfProficientStudents = [Distinct Count: Proficient Students: Student ID];
countOfMyStudents = [Distinct Count: Student ID];
percentageProficient = round(countOfProficientStudents / countOfMyStudents * 100, 2);
percentageGoal = 80;
round(percentageProficient / percentageGoal * 100, 2)

...

If currently 20% of students are proficient, and our goal is 80%, we could also say that we need 60% more students to become proficient to meet our goal (80 - 20).

Code Block

countOfProficientStudents = [Distinct Count: Proficient Students: Student ID];
countOfMyStudents = [Distinct Count: Student ID];
percentageProficient = round(countOfProficientStudents / countOfMyStudents * 100, 2);
percentageGoal = 80;
round(percentageGoal - percentageProficient, 2)

...

Tip
title Referring to Overall Calculations

By default, when a custom expression is applied to a pivot table, the calculation will be aggregated against each unique set of values that are being grouped on. However, in some cases you may want to compare these aggregates with an overall aggregate. You can refer to the overall aggregate of any metric by including the word "Overall" at the beginning of the name.

In this example, this calculation will be aggregated according to how the expression is applied to a pivot table:

Code Block

[Average: Score]

Now in this example, we explicitly desire to use the overall average score, regardless of how this expression is being grouped within a pivot table:

Code Block

[Overall Average: Score]

The power of using the overall aggregate becomes clear in the example below.

...

Application-wide comparison:

Code Block

appwideAverage = [Overall Average: All Sessions: Essay Score];
reportAverage = [Average: Essay Score];
round(reportAverage - appwideAverage, 2)

State-wide comparison:

Code Block

stateAverage = [Overall Average: Utah Students: Essay Score];
reportAverage = [Average: Essay Score];
round(reportAverage - appwideAverage, 2)