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kgrader is a code autograder, originally created by the course staff of CS 296-41 (Systems Programming Honors) at the University of Illinois to grade student homework submissions.
It is written in Ruby.
kgrader was developed using Ruby 2.2, though it should work with any recent version of Ruby.
Install dependencies with gem:
gem install nokogiri ruby-progressbar
Download kgrader over git:
git clone https://github.com/earwig/kgrader.git kgrader cd kgrader
If you want to use UIUC-specific assignment specifications (requires special permissions, but you have those if you want to grade our assignments, right?):
git submodule update --init
kgrader uses rake as its command-line interface.
To show all known classes, semesters, and assignments:
To load a roster (a newline-delimited list of student identifiers) for the current semester of a particular course (e.g. “cs123”):
rake roster cs123 myroster.csv
You can also specify the semester:
rake roster cs123 myroster.csv sp16
To grade a particular assignment (e.g., “mp1” for “cs123”):
rake grade cs123 mp1
After verifying that everything looks good, push the grade reports with:
rake commit cs123 mp1
To do some basic cleanup (i.e., trash uncommitted grading attempts, or reset messy internal state after a bad run):
To restore kgrader to its “factory defaults” (i.e., everything
but also delete checked-out student repos and roster files -- dangerous!):
grade has an extended syntax for different options.
To specify the semester, instead of the inferred current one:
rake grade cs123 mp1 semester=sp16
To set a cutoff date after which commits will be ignored:
rake grade cs123 mp1 due="March 20, 2016 11:59:59 PM CDT"
To grade without fetching new student repo changes:
rake grade cs123 mp1 fetch=no
To grade specific students only:
rake grade cs123 mp1 students=ksmith12 rake grade cs123 mp1 students=ksmith12,bcooper3,mjones14
Normally, kgrader will only regrade a particular student’s assignment if their repo has changed since the last run. To forcibly regrade:
rake grade cs123 mp1 regrade=yes
You can enable superscoring as well, which will re-run tests that a student failed in an attempt to see if they can get a higher grade:
rake grade cs123 mp1 superscore=yes
You can combine these arguments in any meaningful way.
students are also available options for