A study by Rice University released Wednesday has found that the Houston Independent School District’s pre-K program significantly increases preparedness for kindergarten after as little as one year compared to students who do not attend pre-K.

The study, conducted by a postdoctoral fellow at the university, cites English and Spanish assessment scores from kindergarten students after one and two years of pre-K.

The study found that English-assessment test takers who attended one year of HISD pre-K had 2.8 times greater odds of being ready for kindergarten than a student who attended zero years of HISD pre-K. Students who attended two years of HISD pre-K had 3.8 times greater odds of being school-ready than those who attended zero years of HISD pre-K, and 1.4 greater odds of being school-ready than those who attend one year of HISD pre-K.

Get the detailed report here.