The WC Algorithm (Weights within Categories) also assumes that each task is assigned a relative weight. As in WO Algorithm, each Task is assigned a Type Code and each Code is assigned a relative weight. However, the concept of Categories is now added to the calculation.
A Category is a grouping of Task Type Codes that has an assigned percent weight in the Term calculation. The total of all Category weights is, by definition, 100%. The term grade is the weighted average of all the Category grades. Each Category grade is, in turn, a weighted average of all the Tasks having Type Codes included in that Category.
Let's simulate the calculation on a simple spreadsheet, with the same Tasks and grades as in the WO Algorithm, but with the addition of Categories.
First, we have the Task Types and relative weights:
Task Type 
Type Code 
Relative Wgt 
Participation 
P 
0.2 
Homework 
H 
0.1 
Double Homework 
DH 
0.2 
Quiz 
Q 
0.5 
Test 
T 
1.0 
Let's define the Categories as follows, showing the included Task Types for each and the set Term Weights:
Category 
Included Type Codes 
Term Wgt % 
Group Skills 
P 
10% 
Assignments 
H, DH 
20% 
Assessments 
Q,T 
70% 
Total 
 
100% 
Using the same Tasks and grades as in WO, we now perform weighted average calculations for each of the three Categories:
Group Skills Category Tasks 
Code 
Relative Weight 
Student's Grade (%) 
Grade (%) x Relative Weight 
Classroom Discusssion on Tolstoy 
P 
0.2 
75 
15 
Totals 

0.2 
 
15 
Group Skills Category Grade = 15 / 0.2 = 75%
Assignments Category Tasks 
Code 
Relative Weight 
Student's Grade (%) 
Grade (%) x Relative Weight 
Reflections on Summer Reading 
H 
0.1 
90 
9 
Paragraph on English Literature 
DH 
0.2 
80 
16 
Web Research Exercise 
H 
0.1 
100 
10 
Totals 

0.4 
 
35 
Assignments Category Grade = 35 / 0.4 = 87.5%
Assessments Category Tasks 
Code 
Relative Weight 
Student's Grade (%) 
Grade (%) x Relative Weight 
Quiz on 18th Century Poets 
Q 
0.5 
96 
48 
First Test 
T 
1.0 
85 
85 
Totals 

1.5 
 
133 
Assessments Category Grade = 133 / 1.5 = 88.67%
Finally, we weight average the Category grades that have just been calculated:
Category 
Term Wgt % 
Grade 
Term Wgt x Grade 
Group Skills 
10% 
75% 
7.5 
Assignments 
20% 
87.5% 
17.5 
Assessments 
70% 
88.67% 
62.07 
Total 
100% 
 
87.07% 
Term Grade = sum of last column = 87.07%
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