please need the answer in uml diagram and it could be greatful if anyone can answer it ASAP

A school management system contains three classes, i.e., the Staff class, the Subject class and the School class (Primary class).

The Staff class is used to keep and maintain the information of a staff. Its field shall contain

the basic information of a staff, such as the ID, name, gender, title, phone, email, position and

office location. The staff class shall provide the constructor, mutators and accessors to create,

access and modify the Staff object.

The Subject class is used to keep and maintain a subjects information. Its field shall contain

at least the subject name, code, session and year, coordinator (a Staff object), and lectures and labs information. The Subject class shall provide the constructor, the mutators and the

accessors to modify the subject information.

The School class is used to keep and maintain the information of a school. Its field shall

contain some basic information of the school, such as the school name, the head of school (a

Staff object), the school manager (a Staff object), other academic staff (a Staff ArrayList),

and all subjects offered by the school (a Subject ArrayList). School class shall contain at least

one constructor for creating the School objects. The School class shall also contain necessary

mutators and accessors to modify and access the field. More important, it shall contain

methods to modify the staff list and the subject list.

Task 1: Class design with UML class diagrams (2 marks)

Based on the above description, you shall complete the design of the school management

system with the three classes and draw UML class diagrams (using UMLet or other

professional tools, NO hand drawing) to represent your design. You shall use the correct

notations for UML class diagram and clearly show the field, methods and associations

between the three classes.