Schools Management System

We are an e-learning provider and we would like to have a Platform + mobile application that can manage schools when it comes to classroom management , finances and briefly includes the following:

Educational Programs & School Registration Management
Contacts Detailed Cards & Confidential Info
Extra Curricular Activities
Subjects & Groups Management
Additional Services
Timetable Management
Year to year transfers
Document Management
Automated User Management
Moodle & Office365 Integration
Customization Features
Bulk Actions
Mass Export
Templates Management
Employees & Other Contacts
Personal Data & Demographics
Homework & Classwork Management
Behavior Management
Sessions & Lesson Plans Management
Assessments, Exams & Assignments
Outcomes Management & Descriptive Marking
Advanced Attendance System
Advanced Numerical Marking & Analysis
Mentors & Advisors
Registrations
Admissions & Analysis
Admission Portal
Admission Documents & Qualifications
Entrance Examinations & Results
Sales Promotion, Discounts & Online Arrangements
Students Re-registration Tools
Online Enrollment to Subjects or Activities
Students Self Registration

All of this to be provided for several schools from one place so each school will it's own subdomain with a main domain for management + mobile application

You can check : Classter, Addito, Talentlms and moodle for references