Changing a text value in a column to a number, then using SUM to get the total.

SELECT     TOP (100) PERCENT dbo.department.name, COUNT(dbo.Nurses.id) AS Expr1, dbo.Degrees.name AS Expr2, 
                      CASE dbo.Nurses.jobstatus WHEN 'FT' THEN 0.90 WHEN 'PT' THEN 0.60 WHEN 'PRN' THEN 0.30 END AS Status
FROM         dbo.department INNER JOIN
                      dbo.Nurses ON dbo.department.id = dbo.Nurses.dept_id INNER JOIN
                      dbo.Users ON dbo.Nurses.user_id = dbo.Users.id INNER JOIN
                      dbo.Degrees ON dbo.Nurses.Degree_ID = dbo.Degrees.id
GROUP BY dbo.department.name, dbo.Degrees.name, dbo.Nurses.jobstatus
ORDER BY dbo.department.name

The above Query will list each department, then the total number of nurses for that department by degree. So:

Unit 1 has a total of 24 nurses and it breaks down in the query like this:

Unit 1     3     Bachelors

Unit 1     1     Associates

Unit 1     20   No Degree

Similar to the above is the output. The case statement takes the job status which is a text value, and based on those values it will convert them to a decimal value. The problem I'm having is I need a new column that takes the total nurses column and totals it by those job status values. So:

Let's say for the first row 2 of the nurses are .9 and 1 is .6

Unit 1     3     Bachelors     2.4

My issue is in the query, how am I supposed to read the column value that contains the number of nurses and in the same row, total those values?

Thank you.