The PC Algorithm (Points within Categories) does away with the concept of relative weights used by WO and WC and assumes that each Task is assigned a maximum number of achievable points. Task Types and Categories remain, as in WC.
Identical to WC, a Category is a grouping of Task Type Codes that has an set 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. However, each Category grade is now a simple calculation of the total number of earned points for all Tasks with Type Codes included in that Category, divided by the maximum number of achievable points.
Let's simulate the calculation on a simple spreadsheet, with the same Categories, Tasks and grades as in the WC Algorithm.
First, we have the same Task Types, but the relative weights are now meaningless:
Task Type 
Type Code 
Relative Wgt 
Participation 
P 
 
Homework 
H 
 
Double Homework 
DH 
 
Quiz 
Q 
 
Test 
T 
 
Categories are defined as in WC, 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% 
We use the same Tasks and grades as in WO, but we now tabulate the maximum points achievable for each Task as well as the earned points. Grades are calculated for each of the three Categories on the basis of earned points divided by total points:
Group Skills Category Tasks 
Code 
Earned Pts 
Maximum Pts 
Student's Grade (%) 
Classroom Discusssion on Tolstoy 
P 
7.5 
10 
75 
Totals 

7.5 
10 
 
Group Skills Category Grade = 7.5 / 10 = 75%
Assignments Category Tasks 
Code 
Earned Pts 
Maximum Pts 
Student's Grade (%) 
Reflections on Summer Reading 
H 
9 
10 
90 
Paragraph on English Literature 
DH 
16 
20 
80 
Web Research Exercise 
H 
10 
10 
100 
Totals 

35 
40 
 
Assignments Category Grade = 35 / 40 = 87.5%
Assessments Category Tasks 
Code 
Earned Pts 
Maximum Pts 
Student's Grade (%) 
Quiz on 18th Century Poets 
Q 
48 
50 
96 
First Test 
T 
85 
100 
85 
Totals 

133 
150 
 
Assessments Category Grade = 133 / 150 = 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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