I am very glad to listen that you have scored hundred percent marks in final exam. i most heartily congratulate you on your grand success.
I am proud of you. My parents are also very happy to hear of your grand success. Your success is really remarkable.
You worked hard. You did not waste your time. You avoided bad company. I am happy over it. Your parents and teachers must be feeling proud of you.
When are you coming here? We will celebrate your success on your arrival.
I wish you luck in times to come.