See below for English description.

? Cher qui que tu sois qui lit ce journal full nul, si tu es un tant soit peu fut?, tu t'arr?teras sur le champ. S?rieusement, prend une minute pour y penser. Tu t'imagines que je ne le saurai pas? Tu crois vraiment que jamais tu ne diras ou ne feras quelque chose qui me mettra la puce ? l'oreille? Tu sais comment je sais tout ?a? C'est que tu vois, je n'en suis pas ? mes d?buts, il y a longtemps que je tiens un journal. Je suis maintenant pas mal plus exp?riment?e et plus rus?e que je ne l'?tais quand j'?tais jeune... ?

"Dear Whoever Is Reading My Dumb Diary, If you're smart, you'll stop reading it right now. Seriously, just think this through. You're probably imagining that I'll never know, but believe me, you'll say something or do something, and that little clue will be all it takes. And you want to know why that's all it takes? Because I'm another year older, and another year wiser. I've been at this whole diary thing since I was just a little kid. Nothing gets past me anymore."

Original title School. Hasn't This Gone on Long Enough?