Clements High School

• 2007 5A UIL Mathematics
• 2009 5A UIL Mathematics
• 2014 5A UIL Mathematics
• 2021 6A UIL Mathematics
• 2022 6A UIL Mathematics
• 2009 5A UIL Number Sense
• 2010 5A UIL Number Sense
• 2011 5A UIL Number Sense
• 2012 5A UIL Number Sense
• 2014 5A UIL Number Sense
• 2019 6A UIL Number Sense
• 2021 6A UIL Number Sense
• 2022 6A UIL Number Sense [13]

In 2007, one day following the Virginia Tech shooting, the school received a phone call from a parent who complained that her child was playing a PC game involving shooting and killing people in an animated map of the school. Following the call, school officials promptly discovered the website where a 17-year-old alumni was distributing the map as a mod for Counter-Strike. Police searched his home under consent from her mother. They found nothing illegal, but confiscated five decorative swords and ordered the boy to erase the game and maps from his computer. Although he was not charged for the incident, he was subsequently transferred to an alternative education center. The incident caused a rift within the districts board of trustees, with some suggesting that the district's reaction was overwrought. It also angered the local Chinese-American community, of which the boy and his family were apart of.[20][21]

Clements, along with the other Fort Bend High Schools of Elkins and Dulles, was subject to an act of cyber terrorism when a list titled Whimsical Girls of FBISD was posted on Facebook in April 2010.[22] The list named several female students from the three high schools with graphic detail of promiscuous acts that the girls performed, locations of the acts, as well as severe name calling. While some described this as tattle-taling, others argued that the list was a direct form of verbal assault and demanded the expulsion of the offender who posted the list.

On October 15, 2016, Brian Yuen, a 17-year-old member of the school's aquatics team, experienced a major medical emergency while competing at the Don Cook Natatorium. Staff performed CPR until paramedics arrived. He died shortly after being transported to the hospital. A vigil for him was attended by hundreds of family members, friends, and local community members. A GoFundMe established by his brother Charles raised $30,000 in funeral and medical expenses. A moment of silence was held at a football game between Ridge Point and Dulles High Schools that day, with cheerleaders and attendees wearing blue, Yuen's favorite color.[23][24][25]

On May 15, 2019, Maximillion Young, a 17-year-old ninth-grader[26] at Clements High School, was arrested for possession of explosive components. The district stated that a week prior, a parent has disclosed to them via email that her daughter had informed her that Young had told the daughter that he knew how to make bombs, and that he sought to sell them and make his own gunpowder. According to the girl, he would frequently make remarks about using glass, plastic, or rocks in said bombs and that these objects at high velocities would shred people apart. He told her that people in high school are going nowhere in life and that they were not worth the time and that she was the only one who was nice to him. He stated that he was a sociopath and liked to see things go "boom." He hinted at intentions of using the bombs to blow up the school.[27]

On May 9, a warrant was issued to search Young's home. Police arrived at the Young residence that same day. Officers discovered Potassium Nitrate, Charcoal and Sulfur in a tool shed. Young's father led the officers to a detached garage, where they found a bottle of stump remover, a bottle of sulfur dust, and a grey and white colored bowl that contained a metal pipe inside. A "black powdery substance" was also discovered by investigators.[28][27][29]

Young's father allegedly told authorities that his son enjoyed chemistry and had been viewing YouTube videos on how to make gunpowder. The FBI became involved on May 13, who concluded that the discovered materials could be used to make a pipe bomb. Another search was conducted on the same day, with military-style equipment being found, including body armor with wires hanging out from it, a helmet, airsoft guns made to look like real rifles, an AR-15 style rifle firearm, handgun, shotgun, and two military style ammunition boxes found in a safe of a guestroom closet. More bomb making material was found, including two "energetic powders" that were deemed too dangerous to store in the Fort Bend ISD Police Department's property room.[27][28][29][30][31]

Young's bond was set to $25,000. He has since been bonded out.[27]