It’s now written in ink: Miami-Dade Superintendent Alberto Carvalho’s contract will run until 2020.

Carvalho and School Board Chairwoman Perla Tabares Hantman have negotiated and signed a contract addendum that extends Carvalho’s deal with the district another five years and pays him $318,000. That’s less than the $345,000 the School Board was willing to pay, which would have brought Carvalho’s salary up to that of his predecessor, Rudy Crew.

“Far more important to me than the paycheck or checking account is the work and the principles driving the work,” said Carvalho, whose previous salary was $275,000.

Carvalho and Tabares Hantman negotiated and signed the contract addendum Wednesday, one week after the School Board voted to have the two finalize the last details of Carvalho’s new agreement behind closed doors. It took just two sittings.

“It was not complicated,” Tabares Hantman said.

Besides salary and term, the two other changes negotiated in Carvalho’s contract deal with his district-issued car and a $6,000 insurance premium offered by the district. Carvalho, who is still driving Crew’s old GMC sport utility vehicle, will now get a new car every four years rather than every two years as was previously allowed.

He also now has the ability to roll some or all of the $6,000 afforded him in insurance premiums into a retirement plan, though he says he’s never tapped into those dollars in the past.

Carvalho says he will honor a commitment that did not make it into the new agreement: that he will reimburse the district for a portion of his salary that as a percentage rises above the median increase recently given to teachers. He said he will do that by giving compensation from outside speaking engagements to the district, and perhaps by continuing to forgo benefits in his contract, such as the insurance premium.

Carvalho said his focus now, with a contract good until 2020, will be to oversee the implementation of a $1.2 billion bond initiative, “dramatically improve and change compensation” for employees, and bring the district’s schools into the digital age as they prepare for the common core curriculum.