The Miami-Dade School Board voted Wednesday to change the way the district pays its school administrators, basing their compensation on a new model in which principals are paid according to the schools they run.

Principals, currently paid on a range laid out for elementary, middle and high school administrators, will now be compensated through a layered system. They will be paid a base rate but rewarded if they oversee larger, “fragile” schools that serve economically disadvantaged or exceptional students. Pay would also be based on students’ reading levels and school configuration.

As proposed, the next principal at Ludlam Elementary would receive a district-low $94,530 while a counterpart at Homestead Senior High would be paid a district-high $125,530. The new pay scale, which also rewards longevity, will be phased in as principals move to new jobs and will be cost-neutral, according to Superintendent Alberto Carvalho.

The new system, which is intended to recruit and keep principals at the district’s most challenging schools and meet a new state law requirement, will be “a national model,” Carvalho said

Also on Wednesday, board members agreed to have the Dade Delegation chairman place two delegation members on an oversight board that will watch how the district spends $1.2 billion in voter-approved bonds.

The proposal by board member Carlos Curbelo had sparked political tensions and discussion of whether elected officials should have input in how the district spends the money. But the board voted 5 to 3 in favor of the proposal.

The district is planning how to issue the bonds, and will host a workshop 11 a.m. Thursday at the Doubletree Grand Hotel Biscayne Bay in Miami at 1717 N. Bayshore Dr.