Hahaha, it's funny 'cause it's true. The house points were just disproportionate in general. "Harry, you snuck out after curfew, minus 800 points from Gryffindor. However, you saved us all from Lord points to Gryffindor!
I never thought of how Muggleborns get onto the the platform. what about getting into Diagon Alley too? <<I suppose Dumbledore would have to tell them during the customary muggleborn meeting before the beginning of the school year.