The Template Method's intent is to define an abstract algorithm in a base class and defer to the subclass for particular steps without changing the integrity of it's structure. The UML structure looks very simple, with an abstract class defining primitive operations and a concrete subclass overriding discrete functions.

Implementation

 public class School {
              protected final void studyForClasses() {
                   studyForOperatingSystems();
                   studyForCombinatorics();
                   studyForDesignPatterns();
                   studyForProblemSolving();
              }
              public abstract void studyForOperatingSystems();
              public abstract void studyForCombinatorics();
              public abstract void studyForDesignPatterns();
              public abstract void studyForProblemSolving();
         }
        
 public class StudentA extends School {
            public void studyForOperatingSystems(){
               ...
            }
            public void studyForCombinatorics(){
               ...
            }
            public void studyForDesignPatterns(){
               ...
            }
            public void studyForProblemSolving();{
               ...
            }
          }
        

[Note: I used final for 'const correctness' AND Template Methods are not supposed to be overridden!]

This Template Method is reusable in the regards that StudentX (with this same schedule) is able to implement their own study habits for each class. Therefore, the initial algorithm is studyForClasses, and particular steps are redefined in the subclass(es).

TL:DR?

The Template Method has an inverted control structure - normally the subclass(es) call their superclass' methods. This is famously referred to by the "Hollywood Principle" - "don't call us, we'll call you!".

Try to minimize the number of primitive operations so the clients have less work to do!
Use access control modifiers (public, protected, private, etc.) correctly so there is no overflow onto the type's interface. To ensure this, define your primitive operations to be protected (as seen in the above example).