Cergie, who visited my blog today for the first time, made a reference to Lycée Chaptal. It's certainly one of the most beautiful "lycées" in Paris, situated on Avenue des Batignolles. Here is what it looks like (with a Guimard métro entrance in front on one of the photos - good link from yesterday).
My daughter has been inside the building and it's according to her "fantastic".
The lycée is classified among the top ones in Paris. A number of famous persons have attended the school. One of them is our future president (???) Sarkozy, who doubled one year.