BigSIS is a modern, 100% web-based School Management Software / Student Information System (SIS) for private schools, made up of various fully integrated “modules.” The Leads Reporting module is a reporting engine that lets you get real-time enrollment and re-enrollment numbers and view those numbers in a table format or visually in a chart format, including historical comparisons. The Calendars & Events tool is a powerful and flexible calendar program that is built right into BigSIS. It allows for multiple sub-calendars, each with their own events.