/**
 * SchoolSingleton
 * Responsible for managing classes
 */
import Class from "./Class";
export default class SchoolSingleton {
    private static instance;
    private classes;
    private constructor();
    static getInstance(): SchoolSingleton;
    addClass(cls: Class): this;
    getClass(classId: string): Class | undefined;
    getClasses(): Class[];
    removeClass(classId: string): this;
}