Example 1: Student 1
answered questions in the following way

Listening
23 correct answers = 6

Reading Academic
33 correct answers = 7,5

Speaking
Fluency and Coherence - 6
Lexical Resource - 8
Grammatical Range and Accuracy - 9
Pronunciation - 9
Subtotal: (6+8+9+9)/4 = 8

Writing
Task 1
Task Achievement - 5
Coherence and Cohesion - 4
Lexical Resource - 5
Grammatical Range and Accuracy - 8
Subtotal: (5+4+5+7)/4 = 5,25

Task 2
Task Responce - 7
Coherence and Cohesion - 6
Lexical Resource - 8
Grammatical Range and Accuracy - 5
Subtotal: (7+6+8+5)/4 = 6,5

[Now, attention!
As you know, Task 2 Writing weighs 66%, while Task 1 weighs 33% of Writing result.
It means, that Task 2 weighs 2/3 of Writing.
For that reason, to calculate the subtotal for Writing, our subtotal for Task 2 is doubled.
The formula to calculate Writing subtotal is:
(Subtotal Task 1 + Subtotal Task 2 + Subtotal Task 2) / 3 ]

Writing subtotal: (5,25+6,5+6,5) / 3 = 6,08 → 6

Calculating total mark:
Listening 6 + Reading 7,5 + Speaking 8 + Writing 6 = 6,88 → 7


Example 2: Student 2 answered questions in the following way:

Listening
10 correct answers = 3

Reading General
16 correct answers = 3,5

Speaking
Fluency and Coherence - 4
Lexical Resource - 3
Grammatical Range and Accuracy - 4
Pronunciation - 6
Subtotal: (4+3+4+5)/4 = 4

Writing
Task 1
Task Achievement - 4
Coherence and Cohesion - 4
Lexical Resource - 3
Grammatical Range and Accuracy - 5
Subtotal: (4+4+3+5)/4 = 4

Task 2
Task Responce - 5
Coherence and Cohesion - 3
Lexical Resource - 8
Grammatical Range and Accuracy - 4
Subtotal: (5+3+8+4)/4 = 5

[Now, attention!
As you know, Task 2 Writing weighs 66%, while Task 1 weighs 33% of Writing result.
It means, that Task 2 weighs 2/3 of Writing.
For that reason, to calculate the subtotal for Writing, our subtotal for Task 2 is doubled.
The formula to calculate Writing subtotal is:
(Subtotal Task 1 + Subtotal Task 2 + Subtotal Task 2) / 3 ]

Writing subtotal: (4+5+5) / 3 = 4,67 → 5

Calculating total mark:
Listening 3 + Reading 3,5 + Speaking 4 + Writing 5 = 5,17 → 5