The following is a sample letter to send to your school district to withdraw your child from school. Sending this letter completes the withdrawal process.You will need to send the school a Letter of Withdrawal. You can find a sample letter here. HSLDA members can also use the sample letter of withdrawal for Texas, located below. Next, clearly state your child's name and the school they are leaving. HSLDA members can also use the sample letter of withdrawal for Texas, located below. Military. Military Affidavit. This form is used as proof to the court that a custodial or noncustodial parent is in the military. Your spouse may accept a job out of town, or you may choose to move to be in a specific school district for your children.