[3][4] FMHS has been called one of the top 10 best public high schools in the Dallas area[5] and had received an "Exemplary" (highest) rating from the Texas Education Agency.

Plans were set for a 280,000-square-foot (26,000 m2) campus, including two gymnasiums, a cafetorium, an auditorium, a band hall, a football field, tennis courts, and three parking lots.

[2] 108 staff members, led by principal Norman Reuther, taught the first student body of 986 freshman and sophomores.

[8] In the school's second year, varsity sports were introduced and the student body grew to include grades nine through eleven.

[2] In 2000, Kansas State University threatened legal action against FMHS for an alleged copyright violation on the Jaguar logo.

Rather than pay a licensing fee to KSU, as some schools in Texas were then doing, Reuther ordered a re-design of the logo, to avoid the 8% merchandise commission.

[citation needed] In January 2008, Moon announced that FMHS would undergo an expansion adding a third gymnasium and a second band room, to be completed in May 2009.

The main sports the Jaguars compete in are American football, boys' and girls' soccer, boys' and girls' basketball, baseball, cross country, golf, ice hockey (although not school-sponsored), softball, tennis, swimming, track, volleyball, bowling, water polo (also not school-sponsored), and wrestling.

[citation needed] In 2012, the softball team received national exposure when they lost a playoff game on a controversial missed-base rule.

The signs, provided to the students by cheerleaders, were meant to read "Navy, Silver, White" (the school's colors) and "Jaguar Power" (in reference to their mascot).

The incident sparked controversy on social networks and was covered by both local and national media outlets.

[18][19] On February 20, 2015, the Lewisville Independent School District confirmed the display of the signs had been intentional and stated that, in conjunction with the local police department, disciplinary action had been taken.

[6] Flower Mound has received Gold Performance Acknowledgments from the Texas Education Agency for its attendance (2002–06), AP/IB results (2002–06), college admissions (2003, 2004, 2005 and 2006), and the Recommended High School Program (2003, 2004, 2005, and 2006).

[24][25] The FMHS 11th grade team placed first in the nation in WordMasters, an annual critical reading and analysis competition.

Since the fall of 2015, Flower Mound has Gifted and Talented (GT) courses available for students previously in GT/LEAP classes.

2,779 students attended FMHS in the 2006–2007 school year, with core subject classes averaging a student-to-teacher ratio of 25:1.

Ranked 26th based on regional scores, the team improved to 10th at the state competition held in Katy, Texas.

The Math Club sponsors the AMC and AIME tests annually and invites many of the school's students to participate.

[33] Attending the UT Arlington Calculus Bowl for the first time, a five-person team from FMHS captured first place from three-time champion the Oakridge School.

[35] With the district realignment for the 2006–07 and 2007–08 school years, Flower Mound won team events at the district level for calculator, current issues, computer science, literary criticism, mathematics, number sense, science, and spelling, as well as qualifying in one-act play for the area competition.

FIRST Tech Challenge Robotics Team, FTC 12791, Iterative Intentions won the UIL State Championship 6A division in 2022-2023 and 2023-2024.

Elementary schools that feed into Flower Mound include:[36] Bluebonnet, Donald, Forest Vista, Garden Ridge, Liberty, Old Settlers, and Wellington.