So far, all classes were inherited using a primary constructor. If the Student class doesn't have a primary constructor but a secondary constructor instead, the secondary constructor can be preceded by the super keyword:

class Student: Person {

    constructor(fName: String,lName: String, age: Int, id: String) : super(fName,lName,age, id)

    fun aboutEducation(){
        println("I am a student of Computer Science.")
    }

    fun attendLectures() {
        println("I am studding Introduction to Kotlin lecture.")
    }
}

The super keyword will call the constructor of the super or parent class to initialize the properties of the parent class.