See the Value of old School Records:
Matagorda County Texas
Most children, ages 4–5, in the United States attend free public schools beginning with preschool or kindergarten.
While newer school records are not available to the public, some older public records created by schools are beginning to become available to researchers.
Records kept by teachers may be found at historical societies or other document repositories.
A recent addition to the FamilySearch collection of databases is a great example.
The Texas, Matagorda County, School Census Records collections published on FamilySearch.org.
To view the images, you must have a free FamilySearch account.
The FamilySearch wiki describes how to search this collection and also provides tips for how to follow up on your findings. . . Click on "Read More."