Schools in Garrison, Texas, the US. Schools locations in Garrison, Texas. Find the nearest schools locations, near you. All types of business services ATM Bank Courthouse Finance Insurance School All schools in Garrison Garrison High School School 459 U.S. 59, Garrison, Texas 75946 Write a review Phone Website Directions Garrison High School School +1 936-347-7020 459 U.S. 59, Garrison, Texas 75946 Write a review Phone Website Directions