LinguaShcool - system for language schools

LinguaShcool - is a system for language schools that helps to manage students, groups, teachers, lessons, payments, schedules, and replacements. The system supports 3 types of users: manager, student, and teacher.
Technology stack:
Java 8, Spring Framework (Boot, Data, Security), Hibernate, Primefaces, JSF, HTML, CSS, JS, JQuery.