Entering a Catholic School to teach 7 Mitvzos Bnei Noach

Question:

A principal from the local Catholic elementary school reached out to us and asked that we come do an outreach education for the children in the School.

I think this can be a great platform to teach them about the 7 Mitzvos Bnei Noach.

Are we are allowed to go into their building?

Answer:

One may not enter a Catholic School even for a purpose like this.

ש”ך יו”ד קמט, א. שו”ע קנ, א.

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