MS Project 2007 - Help with custom field calculation for grouped by dates view

Question

Hello 
I am trying to creat a view that counts number of students in courses (while # Students is a custom field that is filled manually and courses are tasks).
The view should be grouped by Quarters, Months, and weeks (Calculated custom Text fields)
The weeks groups are displayed by the start day of each week.
For example:
The view counts how many students are in courses in a specific week/month/quarter.
This is the group by definition:
Those are the fields calculations:
“WW_Start” field calculation:
(Year([Start]) & "  W " & Format([Start],"WW") & " " & "   [" & Datevalue(ProjDateSub([Start],CStr(Weekday([Start])-1),"Standard")) & "]")
“MM” field calculation:
Year([Start]) & "  M " & Format([Start],"MM")
Basically it works but it doesn't cover a situation where a course is more then a week.  
Lets say that the duration of the task is 12 days, the task should appear on 3 different weeks groups.
But what i did puts the tasks only in the group that shows the first week of the task.
How can i change my calculations or my view so that in the second, and third week of the task it will also show the task and it's attributes.
For example:
 - "UV5 ACM" task should also be in W 45 not just W 44.
Anyone has an idea how to do that?
Ofir Marco , MCTS P.Z. Projects

Answer 1

Hi
First, thanks for the comment "nice neat groups" :)
I think you understood correctly what is my issue.
Second, about your question:  the class have the same number of students during the course period.
It will have 10 students even if the duration is 1 day or 10 days.
if you look at the basic gantt chart you will see a row like this:
Task name        Duration        Num_Students     Resource names (Instructors)
Course YYY       10d                10                       
Instructor X
it is an attribute on the task, not the assiment.
When i group by dates (Weeks, months, quarters) or by another field (can be course type for example) i the students are summed in the task summary level for all tasks.
Lets say i group by all the tasks (Classes) that are in the 1st quarter, and lets say for the example that there are 3:
Task 1 -->  5 students
Task 2 --> 10 students
Task 3 --> 7 students
Then, the group by summary should count:
Quarter 1 - 2014:   22 (students)
Task 1 --> 5
Task 2 --> 10
Task 3 --> 7
By the way, it doesn't matter if the version is project 2007,2010, 2013, the logic is the same.
Hope it helps and i'll be glad to have some ideas or evan get examples for solution in a project file by e-mail.
Ofir Marco , MCTS P.Z. Projects