School IPM in Texas: How to Stay in Compliance with TDA. With 4.8 million students, Texas has the second largest student base among US states according to the Texas Education Agency. And with 1,237 school districts and charters and 8,435 campuses Texas has more school systems than California. Over 83% of Texas school districts, are public school districts, which are required by Texas law to adhere to the school IPM rules. School IPM in Texas began in 1991 with the passage of a law requiring that pests in and around… Read More →