You can find the contracts! Fill out a Public Records Request. Freedom of Information Act!!
I requested them for our high school principal who took a sizable gift from a bidding contractor on a new high school (during the open bid!). Despite the district having a policy against that there is also a state law (RCW). His answer, and the districts was that he was 'unaware' of the policy. HA- turns out he had a signed contract & by signing it he was acknowledging all policies, and he also had completely up to date Computer Based Training that detailed that very policy.