Students at one Harlandale Independent School District school begin their freshman year in high school also taking classes in college.
At the STEM Early High School, students split their time between high school and college.
Students focus on science, technology, engineering and math. They can get dual credit at Palo Alto College and graduate with an associates degree.
With that associates degree, they are guaranteed a spot at Texas A&M-San Antonio.
Ann Brown is the Biology dual credit teacher for 11th grade. More than half of her students are girls.
"I think it's wonderful, because the STEM careers need more girls," said Brown.
11th grader Noelia Aquinaga wants to pursue a career in a medical field.
"Before, science was just a subject. Now, it's something I want to pursue in life. Mrs. Brown opened my eyes to see what I want to do with my career in life. She makes everything exciting," said Aquinaga.
PHOTOS: Ann Brown wins ExCEL Award for Harlandale ISD
Brown spent 20 years in a medical lab before becoming a teacher.
"I have always loved science and loved sharing it. I love helping students see that science is everywhere. Everything that goes on in their body and in the world is all science," said Brown.
In addition to opening their eyes to science, she takes students on field trips to colleges.
"Hopefully they gain confidence in getting out there and promoting themselves," said Brown.
"She knows her stuff. That inspires us to go further to our associates degree." said 11th grader Brian Arate, who wants to become a doctor.
"My goal is to help them be well-rounded individuals that love science," Brown said with a smile.