Jenna Lee, 14, is in Year 9 at Ripon grammar school and a member of the National Academy for Gifted and Talented Youth. When she was nine she was diagnosed with Turner Syndrome, which means one of her two X chromosomes is missing or faulty. One in 2,000 girls has the short stature and infertility that this causes. Some have associated learning difficulties: poor short-term memory, concentration and spatial awareness.
My very close friends know I've got Turner Syndrome but not other people.
That was my decision. I'm 5ft tall. I've been having growth hormone treatment since I was nine and they hope I'll get to 5ft 2in. It means I can't reach things on high shelves, but it doesn't really affect me otherwise.
I like sport. I play football on the school team and a team outside. I'm not so good at tennis, because of the hand-eye co-ordination.
I like English, drama, French, chemistry and physics. I'm in the top set for everything except maths, where I've had some problems. The teacher wanted to move me from the middle set to the bottom, because I couldn't really understand things like 3-D shapes.
Most teachers don't know I've got Turner syndrome, but my parents told my maths teacher and asked him to explain things a bit differently, because if you change a few words and explain something to me again, I often get it.
Most people haven't a clue what TS is. It would be easier if more people knew what helps me learn: I prefer hand-outs to writing on the board. I like routine, diaries and planners.
Turner Syndrome Support Society: www.tss.org.uk