Here's what I suggest on what you need to do.
1.) Research on what your school needs to improve.
2.) Then research on your library, the internet, or preferrably other schools on the related projects.
3.) Afterwards plan your project, this will really have a time for this will depend the outcome of your project.
4.) Act your plan. T
his is where your encoding and software testing will be done.For specific example:
1.) Library Database System
2.) Go to other schools for what they have done on their projects regarding Library Database System.
3.) Design your project and ask from the librarian what the library needs.
4.) Encode and test the program that you have created.This is just an example, your school might have other things that needs to have a system. Or you can always check the previous that other students have done but not been implemented in your school yet.