[LON-CAPA-users] Bubble sheets

Lars Jensen lon-capa-users@mail.lon-capa.org
Mon, 12 Jan 2009 21:09:02 -0800


Thanks for all replies on this. I planning to try bubble sheet exams 
this semester. I found a Optical Mark Reader on campus (a Grade Master 
by Appersson), and it'll output to file. The instructions in the course 
coordinator manual do not specify any particular format on the "scantron 
file." What is the correct format of this file? Is it just a comma 
separated file with each line consisting of the student-ID and the 
student answers for each problem?


Gerd Kortemeyer wrote:
> Hi,
> On Dec 12, 2008, at 3:26 PM, Lars Jensen wrote:
>> Thanks for the pointer. The instructions doesn't mention anything 
>> about special hardware needed. What kind of grading (scantron?) 
>> machines should the college have.
> Our machines are actually from NCS. One of these days, the word 
> "Scantron" needs to vanish from the LON-CAPA interface - it's a 
> trademarked brand name (I guess like "Kleenex"). However, we can work 
> with most any machine.
> Something like this is likely going to work for low volumes:
> http://www.seabyte.org/ncs_opscan_3.htm
> Of course the cheaper the thing is, the more likely you have paper jams, 
> etc. The MSU CAPA office years ago used to have its own little desktop 
> scanner, but it was a pain; at MSU, LON-CAPA processes around 17,000 
> bubble sheets every semester, so we are using our Scoring Office's 
> services.
>> How about the format of the grading report/file from the scantron - 
>> does it need to follow a certain format for LON-capa to be able to 
>> read it?
> LON-CAPA is fairly configurable in that respect, using configuration 
> files. Once we have a sample of the format of your files, we can likely 
> generate a configuration file for you.
> - Gerd.
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