* Public schools: Houston Independent School District (HISD) is the largest, but there are also other smaller independent school districts within the city limits. Adding up all the elementary, middle, and high schools in all these districts would yield a large number.
* Private schools: Houston has a significant number of private schools, ranging from religious schools to secular ones. These aren't included in the public school counts.
* Charter schools: These publicly funded but independently run schools also add to the total.
* Colleges and Universities: Houston is a major city with numerous colleges and universities, which could also be considered "schools".
To get a precise number, you would need to individually count all schools from each of these categories. No single, readily available source provides this comprehensive total.