Back-to-school hasn’t been the greatest season for Vanessa Hudgens after all.

The scandal-tinged High School Musical star was sued Monday for breach of contract by her former lawyer who says that the 18-year-old hasn’t yet paid a $150,000 bill.

In his complaint filed in Los Angeles Superior Court, Brian L. Schall claims that Hudgens has raked in more than $ 5 million from songwriting and recording deals that he helped negotiate starting Oct. 1, 2005.

The attorney, who is also alleging unjust enrichment, states that he advanced costs and expenses for the teenager while working on her behalf. In return, Hudgens contracted with Schall to pay him five percent of her gross earnings from the aforementioned deals—and to keep paying him up until 12 months after their lawyer-client relationship had ended.

Hudgens has paid him some of what she owes, but not all, Schall says.

“Perhaps Vanessa Hudgens, the star of Disney’s High School Musical and its sequel, needs to go back to school to learn a very basic lesson in contractual obligations,” the lawsuit reads. “If you ask a lawyer to work for you…you are—no matter how talented and successful you may be—supposed to pay the lawyer for his work.”

While the future of her burgeoning recording career, as well as her future at Disney, is unknown, Hudgens, who has been keeping a low profile since year-old naked pictures of her hit the Internet two weeks ago, can at least fall back—for now—on the fact that she has starred in two of the most successful cable-TV movies ever.

The first High School Musical has been seen by more than 250 million people around the globe since premiering on the Disney Channel last year and HSM 2’s premiere brought in 17.2 million viewers, making it the most-watched cable telecast of all time.

The HSM juggernaut helped Hugdens land at number seven on Forbes’ list of top earners under the age of 21 with $2 million.