YANBU
IMVHO it seems a bit out of kilter with other sentencing examples.
Yes he was stupid, thankfully no-one was killed. He handed himself in and plead guilty - saving the courts time and money.
Who hasn't done something wreckless and stupid in the heat of the moment? - driven too fast, not taken care for other peoples' safety, broken the speed limit in a 30 zone, had one too many and then got in a car, jay walked - especially when they were barely out of short trousers or skirts IYSWIM. Youth is wreckless and often does not look at the long term consequences.
WRT sentencing, a good friend of mine was killed in her early 20's whilst driving (many years ago) - the man who pretty much murdered her had already had ishoos with his driving and convictions, he also walked away from the accident and didn't report in to the police for 48 hours (wonder why...)
After his suspended sentence was passed down - without even a driving ban - he strode out of the court laughing
.
There is very little equality within the justice system. This student is a young man with the rest of his life ahead of him, branded as a criminal, with a record, for just being stoopid and thankfully doing no harm. If he'd killed someone, fair enough - send 'im down - but he didn't.