The Legislature finds and declares that local agencies, including school districts, should participate in reviewing the policies that guide the investment of those funds. The Legislature further finds and declares that by pooling deposits from local agencies and other participants, county treasuries operate in the public interest when they consolidate banking and investment activities, reduce duplication, achieve economies of scale, and carry out coherent and consolidated investment strategies. The Legislature further finds and declares that the creation of county treasury oversight committees will promote the public interest by involving depositors in the management of their funds and by enhancing the security and investment return on their funds by providing a more stable and predictable balance for investment by establishing criteria for the withdrawal of funds.