Slidell Independent School District is a public school district located in Slidell, Texas. SISD is made up of four counties; Cooke, Denton, Montague, and Wise. We serve 484 students in grades PreK through 12th. There are two campuses: Slidell Elementary and Slidell Secondary (Jr. High and High School). The district mascot is the Greyhound and our colors are Royal Blue and Orange. Slidell is classified as a 2A district in the UIL's latest realignment. 
Our elementary students are exposed to art and music while also having four opportunities throughout the day for brain breaks and recess in addition to our physical education program.  We believe in holistic health and focus on the overall needs of all students.   Slidell ISD is very competitive in UIL Academics from the elementary level all the way through high school. We often have over 30% of our high school students advancing in various UIL events.  We often rank in the top 5 in the state for overall UIL State Academics and were the 2021 State UIL Academic Champions. We offer WIN time throughout the district to accommodate various needs from tutoring and support to gifted and talented programs and UIL practice.
Our secondary campus offers various elective courses and all five endorsements under the TEA graduation plans.  We have several programs of study with certification offerings.  Many of our high school students graduate core complete at any Texas university with over 30 dual credit courses through Weatherford College.  Soon, students will have the opportunity to graduate with an Associate’s degree and a high school diploma at the same time.  Our OAP has historically advanced and we also offer theatrical design opportunities for students.  In athletics, students can choose to participate in cross country, basketball, golf, powerlifting, tennis, and track. Over the last four years, our athletes have advanced to the regional level in all areas.  We won the 2019 State Basketball Championship, were co-champions in 2020, and were the 2021 State Basketball Championship Runner-Up. Our Boy's Cross Country team was the 2023 1A State Champions.  We also had the 2019 and 2021 State Tennis Champion in girls’ singles and the 2022 State Tennis Champion Runner-Up.