CENTRAL SUSQUEHANNA INTERMEDIATE UNIT
Application: Gradebook
SIS – Teacher Gradebook Calculations
Quick Reference
© 2013 Central Susquehanna Intermediate Unit, USA
Table of Contents
Gradebook Grading Methods ............................................................................................................ 1
Summation (Category weights ALL equal 1) ...................................................................................... 2
Category Average ........................................................................................................................ 2
Marking Period Average ................................................................................................................ 3
Averaging (Category weights are unequal percentages) ...................................................................... 4
Category Average ........................................................................................................................ 4
Marking Period Average ................................................................................................................ 5
Raw Score to Percentage (Category weights are unequal percentages) ................................................. 6
Category Averages ...................................................................................................................... 6
Marking Period Average ................................................................................................................ 7
© 2013 Central Susquehanna Intermediate Unit, USA
SIS – Teacher Gradebook Calculations Quick Reference
GRADEBOOK GRADING METHODS
Categories are used to organize assignments and determine marking period grades.
The CSIU SIS Gradebook enables teachers to define how marking period grades are calculated for each
assignment category by specifying a value in the Grading Method field on the STAFF > STAFF
SCHEDULE VIEWS: GRADEBOOK MENU > SETUP screen. There are four calculations available: (1)
Averaging, (2) Summation Percentage, (3) Raw Score to Percentage, and (4) Summation. Click the Help
button
on the Gradebook Setup screen to view Grading Method definitions and examples.
Use Summation when all categories have an equal weight of 1 (for example, Homework-1, Tests-1, Final
Project-1). Use Averaging if the teacher wants to set up percentage category weights (such as
Homework-30%, Tests-50% and Final Project-20%). Use Raw Score to Percentage to calculate an
average of averages when category weights are unequal percentages.
NOTE: Teachers can use different Grading Methods for different categories, and then combine the grades
for each category in an overall marking period grade. If a mixture of Grading Methods is used, the
marking period average will be calculated as a straight average of all the category averages.
Example: A Gradebook might have two categories defined for a course, Homework and Tests. If
Homework is set up to use Summation and the student’s average in that category is 80%, and Tests are
set up to use Averaging and the student has an average of 100% in the Tests category, the marking
period grade will be 90% (80+100)/2.
NOTE: Teachers can give extra weight to a particular assignment within a category by increasing the
Multiplier for that individual assignment (on the Gradebook Setup screen). Notice the Multiplier of 2 for
Homework Assignment 3 in the spreadsheet below.
NOTE: If a category has a weight equal to 0, those grades will NOT be included in the marking period
average.
Revised: 02/05/2013
© 2013 Central Susquehanna Intermediate Unit, USA
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SIS – Teacher Gradebook Calculations Quick Reference
SUMMATION (CATEGORY WEIGHTS ALL EQUAL 1)
In this example, the Summation method is used for both categories, Homework and Tests. Category
weights are equal (both set to 1). The teacher has given extra weight to an assignment within the
Homework category by assigning a Multiplier of 2 for Homework Assignment 3. The student has earned
grades in Homework and Tests as follows:
Weighted
Total
Points
Earned
Points
Possible
Points
Earned
Assignment 1
10
9
1
10
9
Assignment 2
10
9
1
10
9
Assignment 3
10
8
2
20
16
40
34
Summation
Category
Weight
Weighted
Total
Points
Possible
Homework
Multiplier
MP Grade
1
Category
Total
Tests
Category
Average
85
1
Test 1
100
90
1
100
90
Test 2
100
70
1
100
70
Test 3
100
100
1
100
100
300
260
340
294
Category
Total
MP Total
86.6666
86.4705
Category Average
Sum for each Category
(Assignment Points Earned x Multiplier) / (Assignment Points Possible x Multiplier) = Category Average
Homework
(9x1) + (9x1) + (8x2) / (10x1) + (10x1) + (10x2) = Category Average
34 / 40 = 85 Category Average
Tests
(90x1) + (70x1) + (100x1) / (100x1) + (100x1) + (100x1) = Category Average
260 / 300 = 86.67 Category Average
Revised: 02/05/2013
© 2013 Central Susquehanna Intermediate Unit, USA
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SIS – Teacher Gradebook Calculations Quick Reference
Marking Period Average
Sum for ALL Categories
Sum ALL Points Earned x Assignment Multiplier / Sum ALL Points Possible x Assignment Multiplier = MP Average
multiplier
(9x1)+(9x1)+(8x2) + (90x1)+(70x1)+(100x1) / (10x1)+(10x1)+(10x2) + (100x1)+(100x1)+(100x1) = MP
Homework Points Earned
34
Test Points Earned
Homework Points Possible
260
Test Points Possible
40
294
300
340
294 / 340 =
86.47 MP Average
Revised: 02/05/2013
© 2013 Central Susquehanna Intermediate Unit, USA
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SIS – Teacher Gradebook Calculations Quick Reference
AVERAGING (CATEGORY WEIGHTS ARE UNEQUAL
PERCENTAGES)
In this example, the Averaging method is used for both categories, Homework and Tests. Category
weights are not equal. (Homework is worth 30% of the MP grade and Tests are worth 70%.) The teacher
has given extra weight to an assignment within the Homework category by assigning a Multiplier of 2 for
Assignment 3. The student has earned grades in Homework and Tests as follows:
Category
Weight
Weighted
Total
Points
Possible
Weighted
Total
Points
Earned
Points
Possible
Points
Earned
Assignment 1
10
9
1
10
9
Assignment 2
10
9
1
10
9
Assignment 3
10
8
2
20
16
40
34
Averaging
Homework
Multiplier
Category
Average
MP
Grade
30
Category
Total
Tests
85
25.50
86.66666667
60.67
70
Test 1
100
90
1
100
90
Test 2
100
70
1
100
70
Test 3
100
100
1
100
100
300
260
Category
Total
MP Total
100
86.17
Category Average
Sum for each Category
Assignment Points Earned x Multiplier) / Sum for the Category (Assignment Points Possible x Multiplier) =
Category Average
Homework
(9 x 1) + (9 x 1) + (8 x 2) / (10 x 1) + (10 x 1) + (10 x 2) = Category Average
34 / 40 = 85 Category Average
Tests
(90 x 1)+(70 x 1)+(100 x 1) / (100 x 1)+(100 x 1)+(100 x 1) = 260/300 = 86.67 Cat. Average
260 / 300 = 86.67 Category Average
Revised: 02/05/2013
© 2013 Central Susquehanna Intermediate Unit, USA
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SIS – Teacher Gradebook Calculations Quick Reference
Marking Period Average
1. Multiply the Category average times the category weight for each category:
Homework Category Average x Homework Category Weight (30% or .30)
85 x .30 = 25.50
Tests Category Average x Tests Category Weight (70% or .70)
86.67 x .70 = 60.669
2. Sum all the values calculated in Step 1
25.50 + 60.669 = 86.17
Homework
Revised: 02/05/2013
Tests
© 2013 Central Susquehanna Intermediate Unit, USA
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SIS – Teacher Gradebook Calculations Quick Reference
RAW SCORE TO PERCENTAGE (CATEGORY WEIGHTS ARE
UNEQUAL PERCENTAGES)
This calculation is an average of the category averages. In this example, the Raw Score to Percentage
method is used for both categories, Homework and Tests. Category weights are not equal. (Homework is
worth 30% of the MP grade, and Tests are worth 70%.) The teacher has given extra weight to an
assignment within the Homework category by assigning a Multiplier of 2 for Assignment 3. The student
has earned grades in Homework and Tests as follows:
Raw Score to
Percentage
Category
Weight
Weighted
Total
Points
Possible
Weighted
Total
Points
Earned
Points
Possible
Points
Earned
Assignment 1
10
9
1
10
9
Assignment 2
10
9
1
10
9
Assignment 3
10
8
2
20
16
4
40
34
Homework
Multiplier
Category
Average
MP Grade
85
25.5
86.67
60.669
30
Category
Total
Tests
70
Test 1
100
90
1
100
90
Test 2
100
70
1
100
70
Test 3
100
100
1
100
100
3
300
260
Category
Total
MP Total
100
86.169
Category Averages
1. Convert the points earned for each assignment to a percentage times the assignment multiplier.
((Points earned / points possible) x 100) x multiplier = percentage
Homework
H1:
((9 / 10 = .90) x 100)) = 90 x 1 = 90
H2:
((9 / 10 = .90) x 100)) = 90 x 1 = 90
H3:
((8 / 10 = .80) x 100)) = 80 x 2 = 160
multipliers
Revised: 02/05/2013
© 2013 Central Susquehanna Intermediate Unit, USA
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SIS – Teacher Gradebook Calculations Quick Reference
((Points earned / points possible) x 100) x multiplier = percentage
Tests
T1:
((90 / 100 = .90) x 100) = 90 x 1 =
90
T2:
((70 / 100 = .70) x 100) = 70 x 1 =
70
T3: ((100 / 100 = 1) x 100) = 100 x 1 = 100
Multipliers
2. Add the Sum of the Assignments in Step 1
Homework
90 + 90 + 160 = 340
Tests
90 + 70 + 100 = 260
3. Divide the values in Step 2 by the sum of the assignment multipliers for each category.
Homework
(1+1+2=4 multiplier total)
340 / 4 = 85 Category Average
Tests
(1+1+1=3 multiplier total)
260 / 3 = 86.67 Category Average
Marking Period Average
1. Multiply the Category Average times the Category Weight for each category.
Homework Category Average x Homework Category Weight (30% or .30)
85 x .30 = 25.50
Tests Category Average x Tests Category Weight (70% or .70)
86.67 x .70 = 60.669
2. Add the sum for all the categories in Step 1
25.50 + 60.669 = 86.17 Marking Period Average
Revised: 02/05/2013
© 2013 Central Susquehanna Intermediate Unit, USA
Page 7