I don't know if they consider it breaking the law but it would probably be in violation of SCOTUS' ruling due to the nature of Operation Christmas Child's promotion of Jesus Christ. I don't know of a law on the books stating that it is illegal.
Since 1993, more than 100 million boys and girls in over 130 countries have experienced God’s love through the power of simple shoebox gifts from Operation Christmas Child. Samaritan’s Purse works with local churches and ministry partners to deliver the gifts and share the life-changing Good News of Jesus Christ.
The East Point Academy is a chapter school in the public school system of West Columbia, SC. Like other public schools it receives public funding in order to operate. It is considered a charter school because it offers an alternative type of education from the regular public school curriculum where students learn Mandarin Chinese among other subjects. If you notice the on the letter head of the letter which you provided there is a giant panda with a Chinese symbol. Students