How to convert binominal predictions into numerical?

I have a Data Set with a binominal label which contains the information if a student has passed a test. I want to predict the actual points of the test by using rapidminer. After logistic regression, all I get is the binominal prediction. How can I convert this into numeric values or am I doing something wrong before?

Thx in advance

Open Spoiler:
So I have the attributes G1 and G2 both having values from 0 to 20 aka the points of the respective test. And in G3 I have just 0 and 1, is there a way to predict the points like in G1 and G2 with the help of the other attributes?