1971-1972 Ryan Keith Hamilton won the 1A individual state Championship.
1987-1988 3A Team State Champions.
2007
Band
The Mabank Panther Band placed 7th in Class 2A at Bands of America Grand Nationals. The Mabank High School Symphonic Band, the JV band, competed at UIL and made straight 1's in concert and sight reading. The Mabank High School Wind Symphony, the varsity band, competed at UIL and made straight 1's in concert and sight reading. The band had many people compete at the All-Region contest and had 17 students place in the All-Region band including Craig Chapman who placed 1st chair in timpani in Region 3 and Shelby Smith who advanced to the All-State band.
2009
November 9 -
Mabank Band's very own drum line, entered the Lone Star Percussion contest in Lewisville, Texas and came in fourth out of twenty other drum lines. They also won "Best tenor line." Earlier this year, the Mabank Drum Line took third in the Plano Drumline Competition.
Football
The 2009 Mabank varsity football team won the 13-3A Bi-District championship game.
District Championships[5]
1975 13-2A,
1978 13-2A,
2006 13-3A
Volleyball
During the 2007 Volleyball season, Mabank's Lady Panthers won the district 13-3A All District Volleyball team selections with a 10-0 season.
Women's Soccer
2012 Varsity Girls soccer team were the district champs. 14-4A
District, Area, Sectional champs. and regional quarter-finalists
Portions of some school districts extend into other counties.
Some school districts (Quinlan ISD, Rockwall ISD, Wills Point ISD) serve sections of the county but do not operate any high schools in it.