Three Houston ISD teachers could lose their jobs after an investigation into testing irregularities.

The results come after a nearly five month independent investigation of three teachers at Charles Atherton Elementary School.

According to a news release from HISD, the investigation found testing improprieties on the spring 2013 State of Texas Assessments of Academic Readiness (STARR).

"Testing helps the district measure the degree to which students are learning. It is, therefore, imperative that we have access to reliable and unbiased test results," said HISD Superintendent Terry Grier. "We take these findings very seriously and will present the information to authorities for their review and consideration. State law requires the district to report test security violations to the Texas Education Agency."

The findings from the investigation will be handed over to the Texas Education Agency, that will decide if the teachers will be fired.

The district expects to receive a complete report on the eleven teachers from Jefferson Elementary School who are also under investigate for possible student testing irregularities by the end of the month.