The suit, filed this week, names Tinny Beauty Inc. and two of its officers, saying it used ads in Chinese-language newspapers and word-of-mouth to find and mislead students about obtaining nail specialty licenses.
They charged fees ranging from $350 to $500.
The lawsuit seeks restitution, penalties, fees and an injunction to stop deceptive practices.
A call to Tinny was not initially returned Friday.
The attorney general's office says some of the school's nail specialists have had their state licenses revoked for not completing the required 250 hours of instruction listed on their license applications.
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