The superintendent of the Robstown Independent School District has resigned his position effective June 2012.

School officials confirmed Dec. 14 that Superintendent Alfonso Obregon presented his letter of resignation to school board members following a Dec. 13 scheduled meeting. In his letter, Obregon said he would be stepping down in June to allow the district adequate time to find his replacement.

"As of today, many positive changes have occurred during my two-year tenure at Robstown ISD that I know will impact student performance for years to come," Obregon wrote. "None of these actions could have occurred without your total support in promoting a good educational system for our students, and the community who we serve."

Obregon last week said he felt he had accomplished what he had set out to do, which fostered a sense of change within the district in how to improve instruction and leadership at the campus level.

"My mission there is finished," he said. "I think it's time someone else take over and continue the work."

Trustee Osvaldo Romero said he was hopeful that Obregon would change his mind and stay, something Obregon did earlier this year when he submitted a letter informing the board of his intent to resign from the position. He later backed off that stance, after trustees expressed overwhelming support for Obregon, and accepted a one-year contract extension that would have ended in June 2013.

"I'm hoping that somewhere along the line he'll reconsider," Romero said. "We need him, we need his expertise and we need his leadership. We're losing a very valuable asset if, in fact, he does leave."

Obregon has guided the district through a number of situations that were left over from previous administrations, including a Texas Education Agency investigation into the district's use of Migrant Student program funds and an ongoing federal investigation into past usage of e-rate funding.

In addition, he garnered enough community support for the passage of a $12.4 million bond proposal to pay for a new elementary school, which is currently under construction. Obregon was also a key proponent of the successful passage of the Tax Ratification Election last year, which helped ease the financial burden facing the district this fiscal year.

He made key changes in August to the district's administrative staff at the campus level, shifting, in part, principals and assistant principals to new schools. Trustees have supported Obregon's decision by upholding the reassignments, despite recent grievances from those moved to new positions.

"My intent is not to be popular my intent is to do what is right for the district," Obregon said.

The board must still formally accept Obregons's resignation, which it will likely consider at its January meeting. Romero said he would prefer the district make use of search services provided by the Texas Association of School Boards to look for a new superintendent, as recommended by Obregon in his letter, instead of conducting one internally.

"I don't think that our district has the expertise on the board or staff we just don't have it," Romero said. "You lose objectivity when you do a search in-house."

Obregon has been the district's leader since November 2009, when he took over for Interim Superintendent Tony Morales.