Had an article on this just a few weeks ago. Current schools with 4-day School weeks.Most are off on Fridays but a few are off on Mondays. Lots of information in the article


East Texas:
Apple Springs
Athens
Corrigan Camden
Dekalb
Devers
Hardin
Hubbard
Hull-Daisetta
Jasper
Latexo
Liberty
Malta
New Boston
New Summerfield
Pewitt
Sulphur Bluff
Timpson

North Texas
Chico
Gordon
Gormon
Graford
Merkel
Mineral Wells
Montague
Moran
Palo Pinto
Perrin Whitt
Petrolia
Prairie Valley
Tioga
Woodson

Panhandle
Channing
Follett
Groom
Happy
Kelton
Siverton
Spring Creek

South Texas
Santa Rosa

West Texas
Olfen
Winters

Central Texas
Rochelle

I didn't see it listed but I heard that Quinlan was also 4 day a week