Have You Filed Your 990N Form?
The IRS requires non-profit, tax exempt organizations to file a form 990 every year. This is an information only report. If you don't file for 3 consecutive years, your exempt-status is revoked.  
Most PTAs make less than $50,000 a year, so they file the 990-N online.  If you are eligible to file a 990N, (click on the 990N link in blue), you may do so one day after your fiscal year ends. If your fiscal year end date is May 31 or June 30, try to file by the time school starts.
No need to send confirmation of the filing to Texas PTA. They have a process to obtain filing information directly from the IRS. The Annual Tax-Exempt Confirmation Form is no longer in use.