It's possible the daughter is in private school by reciprocal arrangement, since offspring may get free tuition as a parental perk. And I don't think we want to assume the shooter is male. It could be either spouse or both. Heck, if they had a gun lying around, a child could have got hold of it.
It did strike me that at 39, EP was very young to be Head Teacher of a prestigious school. In the scheme of things, she didn't have experience by graduating from one rank to another, which, I believe, would have taken longer. I'm surprised she wasn't 50-ish.
See here:
"Her teaching career began in 2002 at Lutterworth College, where she taught French and Spanish."
Emma Pattison, her husband and daughter were found dead on the school grounds
ca.sports.yahoo.com
Oh, okay, wait, she's 45 not him? Got it: he's 39. Silly me, I assumed he was the older one... That's still quite the zoom up the ranks.