There's no doubt Hogwarts has produced amazing witches and wizards. But let's take a look at the "The Exclusive But Not Conclusive". For example, Gildroy Lockheart, A corrupt Ravenclaw that stole credit for others accomplishments then wiped their memory. These types of wizards aren't exclusive to Slytherin, in fact great wizards have come from The house of the snake like Merlin. Gyrffindor's not innocent either, Peter Pettigrew a devoted servant of Lord Voldemort. But how did these once ordinary students become so corrupt? Was it their upbringing? If Harry hadn't been famous would he have been like them? Him being raised without supportive and nurturing guardians, could have resulted in that. Luckily the wizard we know and love is the complete opposite. Is there a way to prevent young wizards from becoming like them?