The SCons wiki has moved to https://github.com/SCons/scons/wiki/GSoC
The Google Summer of Code is a program that offer students to write code for open source projects. Of course SCons is one of them!
As a student, you can apply to work on SCons during the Google Summer of Code (please refer to the application conditions on the GSoC website). Do not hesitate to request more info by directly contacting the scons dev mailing list.
SCons GSoC previous entries: