Agenda to be offered for schools

Hello I need to build an online website in two languages French and English, contains an Agenda to be used by Students and teachers and Administrators and parents..to be offered to schools..!! this website will use a big database to store accounts of too many students ( according to their school and class ..) and teachers and administrators and parents and schools and every one of them has different permission to be granted according to his role ..!! this Agenda should be able to help students to see clear warning for exams and important dates..!! and useful statistics Have a look on this website please: [login to view URL]