The National Honor Society is a legitimate organization which enjoys a nationwide reputation and has been in operation for a long time. That being said, you should always do your research about any organization and anyone who contacts you. Scammers could pretend to be representatives of the NHS and try to ask you for money or personal information. Remember to check any contact for its legitimacy, and don"t give out more information than you deem necessary. Additionally, any NHS dues should be paid directly to the organization and not to private entities that contact you.