Nonsense. First,
this is clearly within sentencing guidelines. Second, deterrence is, and always has been a consideration in British law when determining sentence.
It serves a very clear purpose in that it gives a strong message to similarly-inclined men in positions of authority over children (like school teachers) that this kind of behaviour is unacceptable in a civilised society
This, 100%.
I'm astonished, and somewhat depressed by the number of people posting on here apparently coming up with half-baked excuses and justifications for what seems to me to be a clear-cut case of abuse and exploitation, which has been appropriately prosecuted and tried, and is likely to...
In most cases, it's not a breach of employment terms actually. Most universities have clear policies on it, which allow but discourage it, and require it to be disclosed (to HR or whoever) to avoid exploitation etc.
see...
Er... quite apart from the age of consent thing, he was a school-teacher, in a position of authority, which he shamelessly exploited.
Other than that, it's obviously fine.