Denton County is home to some of the most highly regarded public school districts in Texas. For families relocating to the county, school quality is frequently the single most important factor driving neighborhood selection. 

Texas public schools are rated annually by the Texas Education Agency using an A through F accountability system. These ratings are a useful starting point but should be evaluated alongside program offerings, campus culture, and the specific needs of each child.

How Texas School Ratings Work

• A through F ratings issued annually by the Texas Education Agency (TEA)

• Three domains: Student Achievement, School Progress, and Closing the Gaps

• Ratings are campus-level and district-level; a district can have A-rated campuses and lower-rated ones

• Ratings are public at tea.texas.gov and updated each fall

• Ratings alone do not capture program depth, campus culture, or extracurricular strength

• School assignment is address-specific; confirm at each district's website

Lewisville Independent School District (LISD)

Lewisville ISD is the largest school district serving Denton County and one of the most consistently high-performing large districts in Texas. With more than 53,000 students across dozens of campuses, LISD serves Flower Mound, Lewisville, Highland Village, Corinth, Lake Dallas, Shady Shores, and surrounding communities. 

Marcus High School and Flower Mound High School are the district's flagship campuses and rank consistently among the top high schools in Texas for academic performance, AP participation, college enrollment rates, and overall school quality.

• Enrollment: 53,000-plus students

• High schools: Flower Mound, Marcus, Hebron, The Colony, Lewisville, and others

• Top-rated campuses: Marcus HS and Flower Mound HS consistently rate among the best in Texas

• Programs: Gifted and talented, Advanced Placement across all campuses, dual credit, IB program at select campuses

• Fine arts: Nationally recognized programs at multiple campuses

• Website: lisd.net

Frisco Independent School District

Frisco ISD serves portions of Denton County, primarily in The Colony and parts of Frisco within county boundaries. The district is nationally recognized as one of the premier public school systems in the United States. 

Frisco ISD has consistently earned top state ratings and is known for its academic rigor, college preparedness, and modern facilities. The district serves more than 65,000 students and operates numerous campuses with comprehensive programs.

• Enrollment: 65,000-plus students across all campuses

• Reputation: One of the most nationally recognized public school districts in America

• Programs: Comprehensive AP program, dual credit, career and technical education, gifted services

• Denton County campuses: The Colony and Frisco-area addresses within Denton County boundaries

• Website: friscoisd.org

Argyle Independent School District

Argyle ISD is a small district serving the town of Argyle and surrounding areas in central Denton County. Despite its small enrollment of approximately 5,500 students, the district punches significantly above its weight in academic performance. 

Argyle High School consistently earns top TEA ratings and ranks among the best schools in Texas. The small size of the district is both its greatest strength and its primary limitation — class sizes are small, teachers know students individually, and the community character is deeply felt.

• Enrollment: Approximately 5,500 students

• Performance: Consistently one of the top-rated small districts in Texas

• Character: Small class sizes, strong community bonds, personalized attention

• Athletics: State-recognized programs in multiple sports

• Limitation: Narrower program breadth than larger districts

• Website: argyleisd.com

Denton Independent School District

Denton ISD serves the city of Denton and some surrounding areas, with an enrollment of more than 33,000 students. The district operates three main high school campuses: Denton High School, Ryan High School, and Guyer High School. 

The district has strong fine arts and performing arts programs that benefit from the university-town environment of Denton city. The presence of UNT and TWU creates dual credit opportunities and academic enrichment options that are unusual for a district of this size.

• Enrollment: 33,000-plus students across three main high school attendance zones

• High schools: Denton HS, Ryan HS (strong fine arts), Guyer HS (consistently high-rated campus)

• Programs: AP at all high schools, dual credit with NCTC, gifted services, strong fine arts

• Website: dentonisd.org

Prosper and Little Elm Independent School Districts

Prosper ISD serves the rapidly growing town of Prosper and parts of northern Denton County. The district has grown dramatically in recent years, opening multiple new campuses.

Academic ratings are strong and facilities are modern given the pace of recent construction. Prosper High School and Rock Hill High School serve the district's secondary students.

Little Elm ISD serves the town of Little Elm and has grown significantly alongside the town's population surge. The district has built new campuses and expanded programs to serve its growing enrollment. Little Elm High School has developed strong athletics and community programming.

• Prosper ISD: Strong and growing; Prosper HS and Rock Hill HS; new facilities; prosperisd.net

• Little Elm ISD: Community-focused; newer campuses; good for families who prefer smaller district feel; littleelmisd.net

• Aubrey ISD: Serves northern county communities; small district with rural character; aubreyisd.net

• Lake Dallas ISD: Smaller district serving Lake Dallas and parts of Corinth; community-oriented; ldisd.net

Frequently Asked Questions

What is the best school district in Denton County?

Lewisville ISD and Frisco ISD are the most consistently top-ranked large districts in the county, with Marcus High School and Flower Mound High School among the best individual campuses in Texas. Argyle ISD is the premier small district. 

For families prioritizing a specific type of program, Denton ISD's fine arts strength, Argyle ISD's community character, or Prosper ISD's modern facilities may be more important than overall district rankings.

How do I find out which school district serves my address?

Each ISD maintains an address lookup or interactive zoning map on its website. Enter your specific property address to find your assigned elementary, middle, and high school. 

Do not rely on neighborhood names or general city boundaries; school district and attendance zone lines do not always follow obvious geographic divisions.

What is dual credit and how do I access it in Denton County?

Dual credit allows high school students to earn college credit simultaneously while completing high school requirements. Most Denton County ISDs have dual credit partnerships with North Central Texas College, Collin College, or other institutions. 

Students who complete significant dual credit coursework can enter college with a semester or more of credits already earned. Contact your ISD's counseling department for the specific programs and eligibility at your child's campus.

Can my child attend a school outside our assigned attendance zone?

Most Denton County ISDs have open enrollment or transfer request processes for families who want to attend a campus outside their assigned zone. 

Approval depends on available capacity at the receiving campus. Some districts have magnet or specialty programs that accept district-wide applications. Contact your ISD's student services department for current transfer policies.

Resources

• Texas Education Agency — School Ratings and Data

• Lewisville ISD

• Denton ISD

• Frisco ISD

• Argyle ISD

• Prosper ISD