[2] Tomball ISD serves students in northern Harris County and southwestern Montgomery County, Texas, including the City of Tomball, Lakewood Grove, Northepointe, Village Creek, Creekside Park Village[3] (a section of The Woodlands), and the communities of Hufsmith, Decker Prairie, Pinehurst, and Rose Hill.

Tomball Independent School District is accredited by the Texas Education Agency, which rated it "A - Superior" in 2017–2018.

A dedicated high school was built on Main Street in downtown Tomball shortly after.

[9] In 2018, Tomball ISD was named as a finalist in the 17th Annual H-E-B Excellence in Education Awards program in the large school district division.

The award recognizes outstanding school districts demonstrating a commitment to student achievement through innovative programs, parent and community involvement, and professional development opportunities for teachers and administrators.

[10] In November 2021, voters approved Propositions A and B of Bond 2021 - a $494.5 million bond program that will fund four new schools (two elementary, one intermediate, and a third high school) and facilities, including the purchase of the former BJ Services Headquarters building now called the Eastside Complex (which will become the Tomball Innovation Center and, as of January 2023, is the new home for Tomball Star Academy)[11] and a pre-K center, infrastructure, renovations, transportation, technology for staff and students as well as security updates.

[17] Between 1964 and 1974, Tomball ISD presented a "Spring Festival" at the high school auditorium on Main Street that involved all grades and included a Coronation Ceremony, talent show, and musical and theatrical performances.

[18] Since 1981, the district has presented a "Patriotic Show" during a football game each season to honor military members and veterans in the Tomball community with a combined band and drill team performance, a veterans dinner and on-field salute, and fireworks.

[21] Tomball ISD largely served just the City of Tomball and its surrounding rural area until the early 2000s, when expansion of the northwest Houston suburbs and The Woodlands reached the district boundaries, bringing suburban developments into the district.