What is a material and substantial change?
The Texas Family Code allows for a modification of a suit affecting the parent-child relationship if modification would be in the best interest of the child and the circumstances of the child, a conservator, or other party affected by the order have materially and substantially changed since the date of the order or the date of the signing of the mediated settlement agreement that the order is based off of. Material and Substantial change is not defined in the code, but obviously this is a term that has been dealt with by Texas Courts extensively. Material and Substantial change may sound like a high standard, but in actuality the courts give very broad discretion to trial court judges in their assessment of what a material and substantial change is.
What have appellate courts said about material and substantial change?