>its not always the same amount of rows, it dependts on the date the user wants to appear on the report.
>
>If the user select the option to get more info on a student then the each row will take up more space so there will be less rows.
>
>I wonder if in the next vertion there is something i can do.

You can choose/decide the number of rows(lines of text) that you want the report to print on a page based on the font size and line spacing. So doesn't matter what the user selects.

For Example:
For Student A,B,C the user selectd the following records:

Info   
a1     
a2     
a3     
a4      
a5      
b1      
c1      
c2      

You decide to print 3 lines of text on a page.

Info   Page(print on this page)
a1      1
a2      1
a3      1
a4      2
a5      2
b1      2
c1      3
c2      3

So for student A you have 5 lines of info, but only three will be printed on first page the rest on the next page. You can create a group band based on the page field. In the group header you can print student name etc.

So doesn't matter what the user chooses, once you decide to print the maximum lines of text on a page, then you can mark or assign the records to each page by marking page field accordingly.

Hope this helps.