Elsik is divided into two campuses: the main campus (12601 High Star in Houston, zip code 77072), and the Alief Elsik Ninth Grade Center (located at 6767 South Dairy Ashford, city of Houston, 77072), which serves ninth graders.

The ninth grade campus is located in the International District although the main high school building is outside of it.

Wednesdays have 40 minutes of class time, which is used to give teachers a meeting day after school.

In the 2021–2022 school year, Elsik received a score of 68 out of 100 from the Texas Education Agency.

In the late 1980s, a separate building was built bridging the two schools on land formerly used for physical education.

It mainly filled the need for shared classes in one centralized, easily accessible location for students.

[1] All Alief ISD elementary, intermediate, and middle schools feed into Elsik, as high school placement in Alief ISD is determined by a lottery: the lottery can result in either Elsik, Hastings, or Taylor.

Students may also complete an application for the district's magnet high school, Kerr.

As a result of the lottery, the demographics of Alief's high schools are virtually identical.