Most schools in Houston area are organized in three levels - Pre-Kindergarten through 5th grade (elementary), 6th - 8th grade (middle/junior high) and 9th - 12th grade (senior high). Instruction at all levels is largely regulated by state requirements. State law restricts class sizes for grades 4 and under to a maximum of 22 students per teacher. Several standardized aptitude and achievement tests are administered to students at different ages.
The Harris County area includes 24 school districts that offer public education to many incorporated and unincorporated communities.
The Harris County Dept. of Education maintains a library of specific information about each of these districts.