Wilton school officials again found anti-Semitic graffiti in a boys' bathroom -- marking the second such instance in a month.

Principal Lauren Feltz alerted parents about the two swastikas Friday in a letter home. They were drawn in pencil in a boys' bathroom at Middlebrook School, and janitors removed them immediately, according to the school.

It's the second such letter Feltz recently sent out about the same kind of graffiti. Another swastika had earlier appeared on a bathroom wall.

In the letter, she assured parents that "we will not allow words or symbols communicating hatred to be normalized in our school. No staff member dismisses such actions as 'kids being kids.'"

Feltz wrote that students in each grade will be getting specific lessons on religion, along with the power of symbols and their strong connotations and hurtful messages. Teachers will also use resources from the Anti-Defamation League.