STACK is an open-source system for computer-aided assessment in Mathematics and related disciplines, with emphasis on formative assessment.
STACK was created by Chris Sangwin of the University of Edinburgh, and includes the work of many other contributors. A demonstration server is available in Edinburgh: https://stack.maths.ed.ac.uk/demo.
Current state of development
Stack 3.5.6 is a release containing a number of recent bug fixes and minor new features and improvements, based on continuing use at the University of Edinburgh, the Open University, Aalto, Loughborough University, the University of Birmingham and many others.
Please continue to report any bugs you find at https://github.com/maths/moodle-qtype_stack/issues.
Stack is Licensed under the GNU General Public, License Version 3.