Al volver, descubren que el colegio ha cambiado por completo. Ya no se divide entre el Bien y el Mal, sino en la Escuela de Chicas y la Escuela de Chicos , eliminando por completo la figura de los príncipes de los cuentos femeninos.

I think that's a solid outline. Now, proceed to write the blog post accordingly.

Now, I need to structure the blog post. Start with an introduction, then sections like a book review, characters, themes, why read it, and a call to action. Also, perhaps include some background on the author. But the query didn't mention the author. Maybe the first book is "The School for Good and Evil" by Soman Chainani. The second book would be "The School for Good and Evil 2," which is "The School for Good and Evil: A World without Love" or something else. But the Spanish title is "La escuela del bien y del mal 2," so maybe it's the second book in the series. I need to check if that's accurate. Since I can't access external information, I'll proceed with general information.