openSIS is a full featured student information system school management system. It is a transactional software that captures all information of a student right from enrollment all the way thru graduation. Every single transaction in the form of attendance, grade book, report card, discipline, billing and transcript is recorded and maintained over multiple years. A student's past information is available at a click of a mouse.
openSIS-CE, the free and community edition has all the core features necessary to run any school as a single or multi-school district mode.
With the advent of MOOC, learning management systems are an integral part of a schools' education technology arsenal. openSIS is the only open source SIS that is bi-directionally (in the code level) integrated with Moodle using REST API and XML-RPC. It supports Moodle version 1.9 thru 3.2.x.
For school districts with multiple schools and large student body, we have education analytics and business intelligence software called openIntel.
Once you implement openSIS, you can implement openIntel to sit on top of it and perform predictive analytics. You can predict if your schools are going to meet the AYP. You can see which students are at risk and take action, etc.