How to reduce java 8 stream of objects to one element?

Question

Java

There is a stream of objects. For example:

public class Student implements Serializable {

    private long id;

    private String name;

    private String surname;

    private long group;

    // наши геттеры\сеттеры

}

And I need to overtake these objects from the stream into one object of another class, for example:

public class Student implements Serializable {

    private long id;

    private List<Student> students;

    private Student bestStudent;

    private long studentsCount;

   // наши геттеры\сеттеры

}

how to do it better? tried to deal with reduce and collect, but so far it has not been possible to achieve the desired.