This make reminds me of my school days... As i always say, to win one must use his full arsenal. The consequences are of no importance during the fight. Apply this to the final exams and you get the idea...
Unfortunately my miniature FM transmitter never worked well for the final exams due to the limited distance. And then i made a 10 Watt transmitter for the next final exams which worked like charm!
This particular make is very good for learning purposes. A single transistor [BC547] is used to amplify the input and also modulate it. This circuit shows how ridiculously simply is to make an FM transmitter! Go ahead, try it yourselves!
All the details are found in this link.