Senate committee substitute makes the following changes to the 2nd edition. 

Requires all change orders involving school construction contracts to be approved by the local board of education except as provided in a policy adopted by a local board of education. Clarifies that a local board of education must adopt a policy providing change orders are not subject to approval by the local board of education but may be approved by the superintendent or superintendent's designee for change orders that do not exceed the specified amounts. Makes conforming changes.