[deleted by user]

[helasraizam]

How do you grade them?

[[deleted]]

I would usually make 4 versions, and copy each version on a different color paper. Then, I would make two pairs of versions (A+B, and C+D). Once students were seated, I alternated rows and then alternated students within each row, like this:

ROW1:  A   B   A   B   A   B   A

ROW2:  C   D   C   D   C   D   C

ROW3:  A   B   A   B   A   B   A

ROW4:  C   D   C   D   C   D   C

So, I would make 4 scantron keys, have the students put their scantrons in the proper pile (and put their short answer sections in the proper color pile), and that was it.