JavaScript 对象怎么调用子方法的属性?

请问外部怎么调用 shool 属性下的:pSchool,mSchool,college ???

    var r1=new ren("王二狗",20,"");

    console.log( r1.age );
    console.log( r1.name );

    console.log( r1.pSchool);
    r1.say();


    function ren(name,age,sex)
    {
        this.name=!name?"某r1":name;
        this.age=!age|age>120|age<=0?1:age;
        this.sex=sex=="MAN"|sex=="WOMAN"?sex:"UNKNOW";

        this.school=schoolF();

        function schoolF()
        {
            this.pSchool="五七小学";
            this.mSchool="实验小学";
            this.college="五七小学";
            console.log("【我是shool方法】,子属性是【"+pSchool+"】【"+mSchool+"】【"+college+"】");
        }

        this.say=function()
        {
            console.log("【我是say方法】,我的名字是"+this.name+",性别是"+this.sex+",年龄是"+this.age+",小学是"+mSchool);
        }
    }