Administrators in charge of the Robstown Independent School District's finances and curriculum both resigned their positions on Tuesday, while the district's superintendent announced his intent to depart from the RISD after graduation.

RISD Superintendent Alfonso Obregon on Wednesday said Business Manager Jodi Schroedter and Cynthia Mellinger - the district's executive director for curriculum, instruction and compliance - submitted letters of resignation to his office on Tuesday.

The notices were submitted prior to that day's meeting of the RISD Board of Trustees. The school board unanimously approved the acceptance of both resignations at Tuesday's meeting.

In her letter, Mellinger praised the work done by Obregon since he arrived at the district in November 2009 by working with educators and administrators at each of the district's campuses.

"It has been a profound honor to work with you and be a part of a very successful and dedicated team (that) truly has only the best interests of students at heart. I wish to express my profound appreciation for your leadership and guidance," she wrote. "The central office team, under your tutoring, exemplifies a student-centered professional learning community."

Schroedter, meanwhile, expressed her hope that the district would continue moving forward in a positive direction in her letter to Obregon and the Board of Trustees.

"Thank you for (giving) me the opportunity to learn and contribute to (the) Robstown Independent School District," she wrote. "I wish the district nothing but success going forward and will miss working with you and many co-workers."

Obregon said the departure of both Mellinger and Schroedter would have a significant impact on the school district, adding that discussions have yet to be held on possible replacements.

Mellinger and Schroedter will finish out the school year, with their last days scheduled to be June 24.

"This is a great loss for the school district, especially during these trying times of budget crises," Obregon said. "They both have been an asset to this district during their tenures and they'll be missed by all departments based on their prior job performance."

Obregon submitted a letter of intent to the Board of Trustees on Tuesday, as well, although it was not discussed or accepted during the school board's meeting that night. In the letter, Obregon said he is considering submitting his resignation prior to the end of his current contract, which is set to expire on June 30, 2012.

Obregon wrote that he would be submitting a formal letter of resignation on June 4, the day after this year's Robstown High School graduation takes place.

On Thursday, Obregon said the letter of intent was meant to give the current Board of Trustees adequate time to look at all avenues that might need to be taken in terms of finding a potential replacement for the superintendent position.

The letter submitted on Tuesday was not a formal resignation, but rather a letter announcing Obregon's intent to turn in an official resignation letter at a future date.