Tarrytown Schools: Casis, O. Henry, and Austin High

Schools are part of the reason Tarrytown holds its value year after year. The neighborhood is served by Austin Independent School District, and for most addresses the public path leads to Casis Elementary, then O. Henry Middle School, then Austin High School. Private options sit close by as well. Before any of the specifics, the most important point to internalize is the one buyers most often get wrong: attendance zones are set by Austin ISD and can change, and living inside Tarrytown does not guarantee Casis zoning for every address. Verify the current attendance zone for a specific property directly with Austin ISD before you rely on it.

Casis Elementary

Casis Elementary School, at 2710 Exposition Blvd, is the campus most associated with Tarrytown, and its reputation is earned. It is ranked #205 of 8,096 Texas schools, which places it in the top 5 percent statewide (Public School Review, 2026). The academic numbers back up the ranking: roughly 75 percent of students are proficient in math and about 87 percent in reading. Casis also holds a Niche grade of A and a 10 out of 10 GreatSchools rating.

Those results make Casis a major real estate draw. Families relocating to West Austin frequently start their home search with the school in mind, and you can see this play out in how listings are marketed and how buyers prioritize. That said, the same caution applies here as everywhere on this page. Casis serves a defined attendance area, and not every home that sits within the broader Tarrytown boundary falls inside it. If Casis zoning is the reason you are buying, confirm the zone for that exact address with Austin ISD, in writing, before you commit. You can review homes zoned to Casis Elementary to understand what the zoned inventory looks like.

O. Henry Middle School and Austin High School

After Casis, the Austin ISD feeder pattern carries students to O. Henry Middle School, which holds a Niche grade of A-, and then to Austin High School, the lakeside campus that holds a Niche grade of A. Austin High is one of the district's flagship comprehensive high schools and sits near Lady Bird Lake, a short distance from the neighborhood.

Together, Casis, O. Henry, and Austin High form a feeder path that is among the more sought-after in central Austin, which is part of why family buyers gravitate to Tarrytown in the first place. As with zoning, feeder patterns are determined by the district and can be revised over time. Treat any feeder information you read, including what you read here, as a starting point rather than a guarantee, and confirm the current path for your address with Austin ISD.

Private school options

Not every Tarrytown family chooses the public path, and the neighborhood is well positioned for those who prefer independent schools. Several well-regarded private campuses sit nearby, including:

• St. Andrew's Episcopal School
• St. Theresa Catholic School
• The Girls' School of Austin

These schools operate independently of Austin ISD attendance zones and set their own admissions standards, calendars, and tuition. Proximity to Tarrytown is a convenience, not an entitlement, so families should contact each school directly to understand enrollment timelines and availability. For many buyers, the combination of a strong public option in Casis and established private alternatives nearby is exactly what makes the neighborhood work for a long-term family plan.

How schools affect Tarrytown home values

Casis zoning is one of the strongest demand drivers in 78703. Family buyers often target the Casis attendance area specifically, and that concentrated demand supports values for homes that are zoned to the school. It is a real and measurable factor in how the Tarrytown market behaves, and it helps explain why well-located homes in the area tend to hold up through broader market swings. You can see how this fits the wider picture in the Tarrytown neighborhood guide.

It is worth being honest about the limits of this effect rather than overselling it. Schools are one input among several, alongside lot, location, condition, and proximity to Lake Austin, and a top-rated school does not make every home a sound purchase on its own. Just as importantly, the value tied to Casis depends on a home actually being zoned to Casis, which is not automatic for every Tarrytown address and can change over time. The single most useful step a buyer can take is to verify the current attendance zone for a specific address directly with Austin ISD before paying any premium for it. If you are weighing the trade-offs, compare Tarrytown homes for sale with the zoning confirmed for each property you consider.